A merchandiser, provides the following information for its December budgeting process:

The November 30 inventory was 1,800 units.
Budgeted sales for December are 4,000 units.
Desired December 31 inventory is 2,840 units.

Budgeted purchases are:________

a. 5040 units
b. 6,840 units
c. 4,000 units
d. 5,800 units