John Smith has denied his purported signature on a letter which has become critical in a breach of contract suit between Smith and Miller. At trial, Miller's counsel calls Alice, a teacher, who testifies that she taught John Smith mathematics in school 10 years earlier, knows his signature, and proposes to testify that the signature to the letter is that of John Smith. Smith's counsel objects. The trial judge should
sustain the objection on the ground that identification of handwriting requires expert testimony and the teacher does not, per se, qualify as an expert.  sustain the objection on the ground that the best evidence of Smith's handwriting would be testimony by a person who had examined his writing more recently than 10 years ago. overrule the objection on the ground that a schoolteacher qualifies as an expert witness for the purpose of identifying handwriting. overrule the objection on the ground that a layman may identify handwriting if he has seen the person in question write and has an opinion concerning the writing in question.
Question: John Smith has denied his purported signature on a letter which has become critical in a breach of contract suit between Smith and Miller. At trial, Miller's counsel calls Alice, a teacher, who testifies that she taught John Smith mathematics in school 10 years earlier, knows his signature, and proposes to testify that the signature to the letter is that of John Smith. Smith's counsel objects. The trial judge should
A. sustain the objection on the ground that identification of handwriting requires expert testimony and the teacher does not, per se, qualify as an expert. 
B. sustain the objection on the ground that the best evidence of Smith's handwriting would be testimony by a person who had examined his writing more recently than 10 years ago.
C. overrule the objection on the ground that a schoolteacher qualifies as an expert witness for the purpose of identifying handwriting.
D. overrule the objection on the ground that a layman may identify handwriting if he has seen the person in question write and has an opinion concerning the writing in question.
Answer: