Let abcd be a general four-digit number. How many odd four-digits numbers abcd exist such that the four digits are all

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Let abcd be a general four-digit number. How many odd four-digits numbers abcd exist such that the four digits are all distinct, no digit is zero, and the product of a and b is the two-digit number cd?

A. 4
B. 6
C. 12
D. 24
E. 36

OA B

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