Using Black$-$Scholes Model,

a$)$ Determine a European call option on a NDP stock when the price is $$52,$ the strike price is $$50,$ the risk$-$free rate is $12\%,$ and the volatility is $30\%,$ and the time to maturity is $3$ months. Then, calculate its delta.

The option price: $

$($Keep $2$ decimal places$)$

Delta:

$($Keep $2$ decimal places$)$

b$)$ Determine a European put option on a NDP stock when the stock price is $$69,$ the strike price is $$70,$ the risk$-$free rate is $5\%,$ the volatility is $35\%,$ and the time to maturity is $6$ months. Then calculate its delta.

The option price: $ $($Keep $2$ decimal places$)$

Delta: $($Keep $2$ decimal places$)$