What is the formula for calculating the Physical Quality of Life Index (PQLI)?
APQLI = (GDP + Literacy Rate + Health Expenditure)/3
BPQLI = 1/3 (Life Expectancy Index + Infant Mortality Index + Basic Literacy Index)
CPQLI = (Education + Life Expectancy + Infant Mortality Rate) × 100/3
DPQLI = (Population Growth Rate + Life Expectancy + Infant Mortality Rate)/3