Assume that the price of a stock follows a GBM model and K = 50$, So = 45$, T = 1, = 20%, r

Assume that the price of a stock follows a GBM model and K = 50$, So = 45$, T = 1, σ = 20%, r = 5%. Find the price of a fixed strike continuous geometric average call option on one share of the stock. Compare it to the price of a standard call option.