A) A
B) B
C) C
D) A or B
Correct Answer: C
Solution :
[c] According to question, A+B=60% \[\therefore \] (A+B)+ (B+C)-(A+B+C) =B (60+70-100) =30 \[\therefore \] B=30% A =30% and C=40% Hence, C is most efficient.You need to login to perform this action.
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