In case of which soft drink was the average annual sale maximum during the period 1988-1993?

Answer: Option A

Average annual sales during 1988 - 1993
  Cool up
$$\begin{array}{rl}& =\frac{25+6+19+15+25+30}{6}\\ & =\frac{120}{6}\\ & =20\text{ lakh bottles}\\ & \text{Pep up}\\ & =\frac{30+35+30+25+20+20}{6}\\ & =\frac{160}{6}\\ & =26\frac{2}{3}\text{ lakh bottles}\end{array}$$