I [stopped]/[have stopped] ... I [ran out]/[have run out]

I have made up (1a) below.

(1a) Over the past two days, I stopped writing in my diary because I ran out of pens. After work today, I went to a stationary store to buy some pens so that I could continue my writing.

Some of my non-native English speaking friends think some of the verb forms are wrong, so they revised my sentence to make (1b) and (1c).

(1b) Over the past two days, I have stopped writing in my diary because I have run out of pens. After work today, I have gone to a stationary store to buy some pens so that I can continue my writing.

(1c) Over the past two days, I have stopped writing in my diary because I have run out of pens. After work today, I went to a stationary store to buy some pens so that I can continue my writing.

Could you please tell me which version is correct? Thank you very much for your help.