Determine the Ratio and Write It in Lowest Terms $\frac { 3 } { 8 }$

Multiple Choice

Determine the ratio and write it in lowest terms.
-120 cm to 45 cm

A) $\frac { 3 } { 8 }$
B) $\frac { 46 } { 121 }$
C) $\frac { 8 } { 3 }$
D) $\frac { 121 } { 46 }$