A pesticide available in the market reduces the number of plants dying within 4 weeks of plantation by 25%. If each bottle of pesticide costs Rs.770 and lasts for seven days and the nursery starts using it only on the plants planted after the 50th week, the net income (in Rs.'000s) from the project (net of pesticide expenses) is:

1) 1592.5
2) 1725.5
3) 2106.5
4) None of these.