A project initially costs Rs. 5,000 and generates year-end cash inflows of Rs. 1800, Rs. 1600, Rs. 1400, Rs. 1200 and Rs. 1000 respectively in five years of its life. If the rate of return is 10%, the net present value (NPV) will be
1. Rs. 500
2. Rs. 450
3. Rs. 400
4. Rs. 350