Eli Company sells novelty items and offers terms of 1/10, n/30 to credit customers. One customer, Faulkner, Inc., purchased 100 Sweet-16 party decor packs with a list price of $20 each on March 5, 2021. If the customer pays the invoice on March 31, 2021, how much sales discount will Eli Company recognize?

a. $20 b. $200 c. $600 d. $0'