A Farmer Changed the Oil in a Tractor Five Times $8 \frac { 3 } { 4 }$

A farmer changed the oil in a tractor five times during the year. Each oil change required 7 qt of oil. How many gallons of oil did the farmer use in the five oil changes?

A) $8 \frac { 3 } { 4 }$ gal
B) $9 \frac { 3 } { 8 }$ gal
C) $8 \frac { 3 } { 8 }$ gal
D) $5 \frac { 5 } { 6 }$ gal
E) $17 \frac { 1 } { 2 }$ gal