The table shows expenditure and income of a firm in various months. In which month was ratio of savings to income maximum.
| Month | Salary | Expenditure |
| Jan | 40,000 | 28,000 |
| Feb | 35,000 | 30000 |
| March | 37000 | 30000 |
| April | 42000 | 32000 |
| May | 45000 | 31000 |
1
April
2
Feb
3
Jan
4
May