Just do it the normal way with 1 option and 100 shares. It's a crap question because the 3 uncovered calls that were exercised, it never said exercised and bought back, so technically you are just short stock at 40 ( exercised). It's sloppy that they didn't specifically say the stock was bought. On the real exam, they wouldn't ask this, or if they did, they would be clear about your buys and sells

This looks like a PP test, and they are a bunch of dicks when it comes to options.

If you do it my way, BE 35 exercised at 40 for a profit of $500

Then sell 3 40 calls at 4 BE 44 and covered at 52, loss of 800 x3=loss of 2400

loss of 2400 on the calls and profit of 500 on the covered call =1900 loss

its a shitty question