If (5+k)(5-k)=(5^2)-(2^3),then what is the value of K?
Choose the correct choice from the following options: A) 1 B) 3 C) 4 D) 2 E) 6

Rationale: obviously , it is in the formula a ^ 2 - b ^ 2 = ( a + b ) ( a - b ) so k is 2 option d
Answer: D