Subject: mathqa
Question: the cost of one photocopy is $ 0.02 . however , a 25 % discount is offered on orders of more than 100 photocopies . if arthur and david have to make 80 copies each , how much will each of them save if they submit a single order of 160 copies ?
Option: 
A: $ 0.45
B: $ 0.32
C: $ 0.40
D: $ 0.48
Answer: C