Simple Interest Is Given by Prt, Where P Is the Principal

Multiple Choice

Simple interest is given by Prt, where P is the principal investment, r is the interest rate, and t is the number of years. What is the interest if $P = \$ 6800$ , $r = 0.08$ , and $t = 4$ years?

A) $ $1088$
B) $ $3264$
C) $ $2176$
D) $ $6528$
E) $ $4352$