can you explain more about this question? what is the meaning of more profitable?

You are bullish on the prospects of CBA shares and are considering two speculative strategies. . Under the first strategy, you would purchase 100 CBA shares at the spot price of $64. . Under the second strategy, you would enter long European call options covering 1,000 CBA shan a strike price of $65.6 and can be purchased for a premium of $6.4 per share. How high must CBA share price rise for the the second strategy to become more profitable than the f The correct answer is: 72.89