27 is a perfect cube. When x is added to the prime factor of 27, the result is a prime number. What is x?
Options:
A) 1	B) 3	C) 5	D) 8	E) 11

Rationale: 27 is 3 * 3 * 3 then a 3 + 1 = 4 b 3 + 3 = 6 c 3 + 5 = 8 d 3 + 8 = 11 e 3 + 11 = 14 here d is the only addition that gives a prime number .
Answer: D