-88 × 39 + 312 = ?  Choose the correct choice from the following.
A) - 3200  B) 3120  C) - 3120  D) 3200  E) 3208

Rationale: - 88 × 39 + 312 = - 88 × ( 40 - 1 ) + 312 = - 88 × 40 + 88 + 312 = - 3520 + 88 + 312 = - 3120 answer is c
Answer: C