The Equation for Determining Real GDP for Year X Is $\frac{\text {nominal GDP for year \( \mathrm{X} \) }}{\text {average nominal GDP }}$

The equation for determining real GDP for year X is:

A) $\frac{\text {nominal GDP for year \( \mathrm{X} \) }}{\text {average nominal GDP }}$
B) $\frac{\text {nominal GDP for year \( \mathrm{X} \) }}{\text { GDP for year \( \mathrm{X} \) }}-100$
C) $\frac{\text {nominal GDP for year \( \mathrm{X} \) }}{\text { GDP chain price index for year } \mathrm{X}}\times 100$
D) $\frac{\text { nominal GDP for year \( \mathrm{X} \) }}{\text { average family income}}\times100$