Need help with calculations

E) Put-call parity. Question 2 The current price of APT stock is $50. In the next year the stock price will either go up by 20% or go down by 20%. If the risk-free interest rate is 5% per year, the risk neutral probability for the share price to increase is A) 37.5% B) 45% C) 50% D) 62.5% E) 67.5%