Determine the Ratio and Write It in Lowest Terms $\frac { 5 } { 22 }$

Multiple Choice

Determine the ratio and write it in lowest terms.
-7 yards to 4 feet

A) $\frac { 5 } { 22 }$
B) $\frac { 4 } { 21 }$
C) $\frac { 21 } { 4 }$
D) $\frac { 22 } { 5 }$