Capital Gains tax proration?

[Rachana Mukherjee]

Details

Condo purchased in November 2010 and occupied as primary residence as follows:

Purchase price 143K, current value 380K

Owner occupied = 3.6 years  (November 2010 - June 2014) 

Rented out = 4.7 years (July 2014 - March 2019)

Owner occupied = 11 months  (April 2019 to present)

If I occupy it for another year and then sell it. How should I compute my capital gains tax? Will it be prorated or will I able to take the full exclusion? My tax folks are unable to provide me a specific answer to this.

Thanks for