An investor is long 100 shares of XYZ and sells a covered call with a...

This scenario describes a covered call: the investor owns the underlying stock (long 100 shares) and has sold (written) a call option against it. A call option gives its holder the right to buy the stock at the strike price ($50) before expiration. On expiration day, the key question is whether the option is in the money (stock price above strike) or out of the money (stock price below strike). If XYZ closes at $45, the call option with a $50 strike is out of the money because exercising the right to buy at $50 makes no economic sense when the market price is $45. As a result, the call will typically expire worthless, and the writer keeps the premium collected. The investor remains long the original 100 shares, which is exactly choice B.

Choice A is incorrect because assignment/exercise is most likely when the option is in the money at expiration (and sometimes slightly in the money intraday), not when it is out of the money. Choice C is incorrect because standard listed equity options do not create a “margin call on the expiring contract” simply because they expire; margin requirements are about risk exposure while positions are open, and here the position is covered by stock ownership. Choice D is incorrect because a call option expiring out of the money does not deliver shares to the writer; it simply expires and disappears.

This tests core SIE options mechanics: moneyness, expiration outcomes, assignment likelihood, and covered vs. uncovered risk.