The formula for calculating IQ is [UPTET-2017-I]

• A. Mental age \[\times \] Chronological age
• B. \[\frac{Chronological\text{ }age}{Mental\text{ }age}\]      
• C. \[\frac{Mental\text{ }age}{Chronological\text{ }age}\times 100\]
• D. Chronological age \[+\] Mental age