Differentiate between ‘In-the-Money’ and ‘Out-of-the-Money’.
An option is 'in-the-money' (ITM) if exercising it immediately would result in a positive intrinsic value (a profit). For a call, ITM means the asset price is above the strike price.
For a put, ITM means the asset price is below the strike price. An option is 'out-of-the-money' (OTM) if exercising it immediately would result in a zero or negative intrinsic value (a loss).
OTM options have only time value. An option with a strike price equal to the asset price is 'at-the-money' (ATM).