In which of the following pairs of years was the average export of pearls around Rs. 9 crores?

Answer: Option B

$$\begin{array}{rl}& \text{Average export in 2003 and 2004}\\ & =\frac{7.8+9.9}{2}\text{ crores}\\ & =\frac{17.7}{2}\text{ crores}\\ & =\text{Rs. }8.85\text{ crores}\\ & \approx \text{Rs. }9\text{ crores}\end{array}$$