You bought 1000 Google Shares for $400. You also sold call options on Google with a strike

Question:

You bought 1000 Google Shares for $400. You also sold call options on Google with a strike of $435 for $20.
a) What is the maximum profit on your position?
b) What is the profit on your position when the stock hits $440?
c) Draw the profit/loss diagram for this position clearly marking the max loss and the maximum profit.