Question

Which is a prime number? A. 39 B. 49 C. 81 D. 89

Answer 1

D: 89 is the prime number.

Answer 2

The prime numbers include: 2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73, 79, 83, 89, 97, 101, 103, 107 etc. 

The correct answer is D. 89