A classmate asks you to check their answer to this problem:

Simplify:

They got
as their final answer. Are they correct?

Responses

No, they should have added the exponents instead of multiplying them.
No, they should have added the exponents instead of multiplying them. x to the 5th power y cubed plus x cubed y squared

No, the second term should be 1 after being raised to the power of 0.

No, the second term should be 1 after being raised to the power of 0. x to the 6th power y to the 9th power plus 1

No, the whole expression should equal
because of the 0 exponent.
No, the whole expression should equal 1 because of the 0 exponent.

Yes, this answer is correct.
Yes, this answer is correct.

No, they should have added the exponents instead of multiplying them. x to the 5th power y cubed plus x cubed y squared