The following bar graph shows receipts and expenditure of a business firm over 5 years. Gain = Receipts - Expenditure.
What is the percentage of increase in expenditure from 2018 to 2019 as compared to 2018?

A

$$6\frac{1}{4}$$

B

$$8\frac{3}{4}$$

C

$$2\frac{1}{2}$$

D

$$6\frac{2}{3}$$