Production and related schedules

Overhead is applied at a rate of $$1\mathrm{.}60$ per direct labor hour.

Material A costs $$0\mathrm{.}05$ per pound, and Material B costs $$0\mathrm{.}07$ per pound. Prepare the following information:

a$.$ Production schedule by product.

Note: Use a negative sign in your schedule to indicate that an amount is subtracted.

b$.$ Purchases budget in units by raw material, in total, and in dollars.

Note: Round your final answers to the nearest whole dollar. I don't understand why b is wrong