The following postfix expression with single-digit operands is evaluated using…

The following postfix expression with single-digit operands is evaluated using a stack:
8 2 3 ^ / 2 3 * + 5 1 * -
Note that ^ is the exponentiation operator. The top two elements of the stack after the first * are evaluated are

  1. A.

    6,1

  2. B.

    5,7

  3. C.

    3,2

  4. D.

    1,5

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Correct answer: A

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