Teton Trails manufactures backpacks for adventurers. The backpacks come in two types: Daytripper, and Excursion. Teton anticipates the following production volumes:

Daytripper: $4,000$ backpacks in July, $4,400$ backpacks in August

Excursion: $2,400$ backpacks in July, $1,800$ backpacks in August for the next month.

What is the budgeted level of material purchases in July for both types?

Select one:

a$.3,960$ yards of $800$ denier polyester and $4,920$ yards of $1200$ denier polyester

b$.4,000$ yards of $800$ denier polyester and $4,800$ yards of $1200$ denier polyester

c$.4,040$ yards of $800$ denier polyester and $2,280$ yards of $1200$ denier polyester

d$.4,040$ yards of $800$ denier polyester and $4,680$ yards of $1200$ denier polyester

e$.$ None of these options are correct.