The above graph represents the salary, expenditure, tax and savings (in rupees) per month of the persons A, B, C and D per month.
Study the graph and answer the question.
The expenditure as a percentage of salary is the least for:

From the graph,

The expenditure as a percentage of salary for A = $$\frac{6000}{12000}\times100$$ = 50%

The expenditure as a percentage of salary for B = $$\frac{7500}{18000}\times100$$ = 41.67%

The expenditure as a percentage of salary for C = $$\frac{5550}{15000}\times100$$ = 37%

The expenditure as a percentage of salary for D = $$\frac{6000}{16000}\times100$$ = 37.5%

$$\therefore\ $$The expenditure as a percentage of salary is least for C

Hence, the correct answer is Option D