Write the Rate as a Fraction in Simplest Form $\frac { 984 \mathrm { cal } } { 9 \mathrm { oz } }$

Write the rate as a fraction in simplest form.
-984 calories in a 9-ounce serving of lasagna

A) $\frac { 984 \mathrm { cal } } { 9 \mathrm { oz } }$
B) $\frac { 328 \mathrm { cal } } { 3 \mathrm { oz } }$
C) $\frac { 3 \mathrm { cal } } { 328 \mathrm { oz } }$
D) $\frac { 9 \mathrm { oz } } { 984 \mathrm { cal } }$