# Fight Finance

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 Scores keithphw $5,821.61 an4_bolt$4,086.43 Skywalke... $1,020.00 jtfan2$903.09 Visitor $850.00 Carolll$803.33 trungbin $803.09 Jade$785.80 cuiting $779.70 Visitor$770.00 Visitor $760.00 Visitor$700.00 Visitor $680.00 Visitor$650.00 Visitor $650.00 Visitor$650.00 alison $644.70 ninalee$639.70 Kyrie Ir... $590.00 Visitor$570.68

Which of the below formulas gives the profit $(\pi)$ from being long a put option? Let the underlying asset price at maturity be $S_T$, the exercise price be $X_T$ and the option price be $f_{LP,0}$. Note that $S_T$, $X_T$ and $f_{LP,0}$ are all positive numbers.