Li's English book weighs 3 pounds, her math book weighs 5 pounds, her history book weighs 4 pounds, and her science book weighs 6 pounds.How many different combinations of one or more books can Li pack in her backpack so that the total weight of the books is 12 pounds or less?
A) 9
B) 10
C) 11
D) 12
E) 18
Correct Answer:
Verified
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