Calculate the value of the current call option:

A stock through Apple has a strike price of $50. Bobby and Christine both believe the stock will go up 20% one year or it will go down 20% one year from now ($40 or $60) <-- I am assuming either one of those is the answer. Bobby believes the probability of the stock going up to $60 one year from now is only 70%, while Christine believes the probability that it will go up to $60 in a year which is only 30%. If the risk free rate of return is 3.5%, what is the value of the call option one year from now?

I am currently trying to check my work.