The Following Information Is Given About Options on the Stock $\sigma$

The following information is given about options on the stock of a certain company.
S₀ = 23 X = 20
r_c = 0.09 T = 0.5
$\sigma$ ² = 0.15
No dividends are expected.
Use this information to answer questions 1 through 8.
-To construct a riskless hedge,the number of puts per 100 shares purchased is: (Due to differences in rounding your calculations may be slightly different."none of the above" should be selected only if your answer is different by more than 0.01. )

A) 0.7580
B) 0.2420
C) -0.2480
D) -0.6628
E) none of the above