Solve Write a Mixed Numeral for the Answer $8 \frac{5}{6}$ Gallons of Paint to Paint the Front of a House

Multiple Choice

Solve. Write a mixed numeral for the answer.
-A painter used $8 \frac{5}{6}$ gallons of paint to paint the front of a house and another $8 \frac{7}{9}$ gallons to paint the back. How much paint did he use in total?

A) $16 \frac{47}{54} \mathrm{gal}$
B) $17 \frac{11}{18} \mathrm{gal}$
C) $16 \frac{87}{54}$ gal
D) $16 \frac{11}{18} \mathrm{gal}$