• Income tax on unit linked pension plan surrender

Hi I have a unit linked pension plan on which I was paying Rs.1 lac premium annualy for three years during April 2010,2011 and 2012. I surrendered the policy in April 2015 after five years 

However through the three years in which the premium was paid I never claimed the deduction benefit under section 80CCC as I had other investments under section 80C so did not mention the premium for the Pension Plan under 80CCC.

Now when I surrendered the policy in April 2015 I received Rs.4,40,000 

What will be the tax and under which head would I need to pay the same as I am receiving conflicting opionions from CAs

Would each of the premiums be indexed and then LTCG on the gain after indexation which is approach as suggested by some.
Others are suggesting we  would have to pay tax on  the  gain of 1,40,000 (4,40,000-1,40,000) which would be taxable under income from other sources
I have been informed that since no benefit under 80CCC was claimed I do not need to pay tax on the entire surrender value.Is that correct