If their marketing team succeeds, they _____ their profits by 20

If their marketing team succeeds, they _____ their profits by 20 percent.
A、will increase
B、would be increasing
C、will have increased
D、would have been increasing
【正确答案】：A
【题目解析】：if引导的条件状语从句，从句用的一般现在时，主句要用一般将来时。