9. Barrier option prices are shown in the table below. Each option has the same underlying asset and the same strike price.

Type of option	Price	Barrier
Down-and-out	25	30,000
up-and-out	15	50,000
Down-and-in	30	30,000
Up-and-in	X	50,000
Down Rebate	25	30,000
Up Rebate	20	50,000

Calculate X, the price of the up-and-in option.