On an Average Day, Your fiRm Writes 20 Cheques with an Average

On an average day, your firm writes 20 cheques with an average amount of $430. These cheques clear your bank in an average of 4 days. What is the average amount of your disbursement float?

A) $1,720
B) $2,150
C) $8,600
D) $17,200
E) $34,400