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Direction: Factors of a number which are prime are called its prime factors. Factors of 36 are: 1, 2, 3, 4, 6, 9, 12, 18. Prime factors of 36 are: 2, 3. A number can be written as a product of its prime factors, e.g.\[36=2\times 2\times 3\times 3\]. A factorization in which every factor is prime is called prime factorization of the number. Two numbers are co-prime if they have only 1 as the common factor. Based on the information given above answer the following questions. Prime numbers between 20 and 40 are

A) 23, 29, 31, 32             

B) 23, 29, 31, 37

C) 21, 25, 27, 29             

D) 33, 35, 37, 39