I had a Stock Plan Account from my  company and sold the company shares  in July, 2020.  I received a Form 1099-B  from the investment company who managed the plan.  I was allocated shares, some of which were used to pay taxes (not sure if that was just federal or federal and state taxes).   The net shares I sold were 50.   The shares were given to me in April 2019 (I did not purchase the shares).

In the Gain/Loss section of my Turbo Tax PA taxes it shows I have a $320 gain in the Long Term Noncovered line (New Sales Price of $3643 and a Cost Basis of $3323).

I am prompted to check one of four boexes:

1.  "This sale is not taxable in PA".  -- I am not sure if it is or not.  

2.  "This asset was acquired before June 1, 1971...".  --   it was not

3. " This asset was used for both business and personal purposes". --- it was not

4.  "This sale requires an adjustment to the basis of the asset" -- I am not sure what this means

Turbo Tax says PA treats cost basis differently than the federal government does.

My Question:    Which box should I check, #1 or #4.  

Thanks for your help!!