European call option with a delivery price of $50 that expires in 2.6 months

The quotation is 4 yuan, and the current price of the target is 30 yuan. Assuming half a year

The risk-free rate is 10% per annum (continuously compounded).

(1) May I ask the European put period with the same delivery price and expiry date

What should be the price of the rights?

(2) If the above options are American, they have the same delivery price

What is the price range of the American put option with the expiration date?