This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Social & Preventive Medicine
PQLI included are -a)  Literacyb)  Infant mortalityc)  Incomed)  Life expectancy at birth 
Select and explain. 
A. ac, B. ab, C. abc, D. c
B: ab
Answer: B: ab 
Explanation: Life expectancy at 1 year (not at birth) is included