Question

3,000 ___  15 ___ 4 ___  (20)² ___  20 = 32,200

(56-60): Which of the following symbols should be placed in the blank spaces, respectively ( in the same order from left to right ) in order to complete the given expression in such a manner that makes the expressions definitely true?
A ×, +, ×, -
B ÷ , × , × , +
C ÷, + , × , ×
D +, - , ÷, ×
E None of these
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