If k is an integer and 121 < k^2 < 225, then k can have at most how many values?
Choose the correct choice from the following answers.
A) 3	B) 4	C) 5	D) 6	E) 8

Rationale: given k is an integer 121 < k ^ 2 < 225 11 < | k | < 15 k = - 12 , - 13 , - 1412 , 1314 answer : d
Answer: D