the average weight of 4 pigs is 15 kg . weight less than 16 kg is considered as under weight . what maximum no . of pig can be under weight .	Choose the correct answer.
A) 0	B) 1	C) 2	D) 3	E) 4

Rationale: sum of all four pigs weigh = 60 kg it is possible that all four pigs are underweight . because the average is 15 kg which itself underweight . answer e
Answer: E