Follow the order of operations, PEMDAS
First, simplify your Parentheses:
57 -
/ 3 x 4
Then, simplify your exponent:
57 - 36 / 3 x 4
Then, divide/multiply from the left to the right:
57 - 12 x 4
57 - 48
Then, just subtract, and you get your answer, which is 9, choice A