What Is the Amount of the Trade Discount on Merchandise $$20 \frac { 1 } { 2 } \%$$

What is the amount of the trade discount on merchandise that a vendor can receive with a list price of $7,700 and a trade discount rate of $$20 \frac { 1 } { 2 } \%$$ ?

A) $1,275.50
B) $5,760.00
C) $1,578.50
D) $2,500.25