find the unknown term 8 , 86 , x , - 4 , - 12  Choose the correct choice from the following options:
A) 2
B) 4
C) 6
D) 8
E) 9

Rationale: 8 , 86 , x , - 4 , - 12 i guess each differ in d range of 2 8 - 8 = 0 8 - 6 = 2 6 - 2 = 4 2 - 6 = - 4 - 4 - 8 = - 12 answer : a
Answer: A