Pls help this is important
Lea bought some books and a reading light. He spent a total of $54. Each book cost $6 and the reading light costs $12. How many books did he buy?
Select an equation that could be used to answer the question above. Let b represent the number of books.
A. 54+6b+12
B. 54 - 12b = 6
C. 6b+ 12=54
D. 12b-6=54