Solve the Problem
-Bobby Built a House of Cards $20 \mathrm{ft} 1 \mathrm{in}$

Solve the problem
-Bobby built a house of cards $20 \mathrm{ft} 1 \mathrm{in}$ . tall. Pam built a house of cards $12 \mathrm{ft} 10 \mathrm{in}$ . tall. How much taller is Bobby's house of cards than Pam's?

A) $7 \mathrm{ft} 10$ in.
B) $8 \mathrm{ft} 11 \mathrm{in}$ .
C) $7 \mathrm{ft} 3$ in.
D) $7 \mathrm{ft} 2$ in.