Consider IKEA’s return policy:
"If you’ve changed your mind and are not entirely satisfied with your purchase, simply return the unused item within 45 days for an exchange or refund."
IKEA’s return policy represents:
a) a European put option written by IKEA.
b) a European call option written by IKEA.
c) an American put option written by IKEA.
d) an American call option written by IKEA.
e) a European put option written by IKEA customers.
f) an American put option written by IKEA customers.