Oliver had m dollars to spend on a backpack for the new school year. The expression below represents the amount of money he had remaining after purchasing the backpack. m - (y + 0.07y)

If his total purchase included the backpack and tax, which statement best describes y?
A.
The amount of money he had to spend on the backpack.

B.
The amount of tax for the backpack.

C.
The price of the backpack, including tax.

D.
The price of the backpack, not including tax.