contestada

Elkins Corporation uses the perpetual inventory method. On March 1, it purchased $20,000 of inventory, terms 2/10, n/30. On March 3, Elkins returned goods that cost $2,000.
On March 9, Elkins paid the supplier. On March 9, Elkins should credit :
a. purchase discounts for $400.
b. inventory for $400.
c. purchase discounts for $360.
d. inventory for $360.