Multiplier being 5 times, an incremental investment of ₹100 crores leads to an incremental income of : -

₹500 crores

The correct answer is option (4) : ₹500 crores

The multiplier effect can be calculated using the formula :

Incremental Income = Multiplier * Incremental Investment

Given a multiplier of 5 times and an incremental investment of ₹100 crores :

Incremental Income = 5 * 100 = 500 crores

Therefore, the correct answer is : ₹500 crores