A pack of 4 rolls of Charmin cost $3.64. A pack of 32 rolls of Charmin cost $20.80. How much cheaper per roll is it to purchase the bigger pack?
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A. 160.49
B. 1/4
C. 242
D. 12.36
E. 4240
F. 1/24
G. 0.26
H. 2/4