Monica found the volume of the prism below using the expression 4 + (4 times one-half).

What errors did Monica make? Check all that apply.

She should have counted only 2 unit cubes instead of 4.
She should have counted 8 one-third cubes instead of only 4.
She should have found the total value of the one-third cubes by multiplying by One-third instead of by One-half.
Each fractional cube is worth Two-thirds instead of the One-half that she used.
She cannot stack more than one layer of fractional cubes in a prism.