Answer:
c. The price of the call option will increase by less than $2, but the percentage increase in price will be more than 10%
The delta of an option is always less than 1 hence a $1 increase in underlying stock can never be equivalent or more than $1 similarly in this case a $2 rise can never have $2 or more than $2 increase in call option price, yes but the growth in option price can be more than 10%