A European put option with a strike price of $9.80 expires in four months. The underlying stock is currently priced at $10.00, and it is known that at the end of four months the stock will be either $9 or $11. The composition of the riskless portfolio is:

Select one:

a. 1 long put option and 0.4 long shares

b. 1 long put option and 0.4 short shares

c. 1 short put option and 0.4 long shares

d. 0.4 short put options and 1 short share

e. None of the above.