80 C deduction

Dear Vanita,

80C 150000 already you meet the limit, so you can't claim more than that, you can invest anyway but not able to claim under 80C because limit is 1.50L

1. The maximum amount allowed as deduction u/s 80C is Rs. 1.5 lakhs. 
2. All the above three investments are covered u/s 80C and even if you invested Rs. 1 lakh in LIC (amount of premium) then you are left with Rs. 50,000 to be invested in PPF. 
3. However, as per sec 80CCD(1B) additional Rs. 50,000 can be invested in National Pension Scheme (NPS) notified by the Central Government. If you would like to make an investment in pension then sec 80CCD(1B) can be resorted to for claiming additional Rs. 50,000 deduction. 
Please correct me if the above solution has an alternative view.