Instead of going long a wheat forward contract @ $6/bushel (expiring in 6 months), Betty buys a call option with a strike price of $6 (expiring in 6 months). She pays $1 for the option and the continuously compounded interest rate r = 5.25%. The price of wheat 6 months from now is ST. For what range of prices is Betty glad she bought the option instead of the forward contract? (Prices to the nearest $0.01.)