Mr A has earned long term capital gain of Rs 40 lakhs on 1-1-2018
A and his son has purchased jointly under construction flat of Rs 1.50 crores as per purchase agreement dated 14-11-2016
Now , in may 2018, Mr A has paid Rs 50 lakhs to the builder as per purchased agreement
pl advise whether, Mr A can avail long term capital gain eXemption