Which expression is a polynomial?

A. 11/√x

B. √11x

C. x-√11

D. 11/x²

Polynomials have placeholders that have exponents that are positive and whole

A. that is 11x^ (-1/2), double no

B. that is (11x) ^ (1/2), no

C. that is x^1-11^ (1/2), good

D. that is 11x^ (-2), nope

C is answer