Which terms could be used as the last term of the given expression to create a polynomial written in standard form? Choose three correct answers. negative 5 x squared y to the 4th power plus 9 x cubed y cubed plus underline

The terms shown are ordered by descending powers of y: the first has y⁴ and the second has y³. The last term must therefore have a y exponent no greater than 3. Choices A and C have y⁰, and choice E has y¹, so all three fit. Choices B, D, and F have y⁵, which would break the order.

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