Set X consists of the positive multiples of 5, and set Y consists of the odd prime numbers less than 20. If set Z

Set X consists of the positive multiples of 5, and set Y consists of the odd prime numbers less than 20. If set Z consists of every distinct integer less than 100 that is the product of one element from set X and one element from set Y, then set Z consists of how many elements?

A. 12
B. 14
C. 15
D. 16
E. 18

OA B

Source: Princeton Review

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