You are incorrect. CEO A has lost $10 per share, but CEO B has lost nothing. CEO A still owns the stock....his weath has gone from $50 per share to $40 per share.
CEO B only owns the option on the stock. It makes no difference to her if the stock is $50, $40, $10. It is out of the money.
If your response does not display an understanding of this convex payoff you should definitely ask Berkley for a refund. Options encourage risk-taking. Open an UNDERGRADUATE investments text and glance at the payoffs to a long-call.
bs. it means nothing if the stock is $10 out of the money rather than $40? it sure means a lot if the stock goes up $20 tomorrow. and what's my "weath" worth if I can't sell the stock or get at it? zero.