72 × 28 = 36 × 4 × _________.The number in the blank isA) multiple of 7B) a prime numberC) less than 10D) an even numberE) factor of 56Which of the following is correct?

• A. A), D), B)
• B. C), D), E)
• C. A), D), E)
• D. A), B), C)