Problem $1$ Consider RONA$$s return policy: $$RONA accepts returns of items purchased up to $30$ days following the date of purchase. The total amount of the returned merchandise purchased will be reimbursed if paid in cash or credited to the account debited at the time of purchase.$$ RONA$$s return policy represents: a$)$ an American call option written by RONA. b$)$ a European put option written by RONA customers. c$)$ an American put option written by RONA customers. d$)$ a European put option written by RONA. e$)$ a European call option written by RONA. f$)$ an American put option written by RONA.