Paul bought 9 total shirts for a total of $72. Tee shirts cost $10 and long sleeve shirts cost $7. How many of each type of shirt did he buy?
A. 7 tee shirts and 2 long sleeve shirts
B. 3 tee shirts and 6 long sleeve shirts
C. 4 tee shirts and 5 long sleeve shirts
D. 5 tee shirts and 4 long sleeve shirts
plese help