Use the factorial operation to evaluate 9!. 8 + 7 + 6 + 5 + 4 + 3 + 2 + 1

8 x 7 x 6 x 5 x 4 x 3 x 2 x 1

9 x 8 x 7 x 6 x 5 x 4 x 3 x 2 x 1

9 + 8 + 7 + 6 + 5 + 4 + 3 + 2 + 1

Two students are discussing the flow of electricity. student a says that voltage is a measure of the amount of electron flow in a circuit. student b says that power is the product of voltage and current. which of the following statements is correct? a. only student a is correct b. only student b is correct c. both of the two students are correct d. neither of the two students is correct