Use the Following Information to Answer the Question(s)below

Multiple Choice

Use the following information to answer the question(s) below.
Galt Industries is trading for $20 per share and has 25 million shares outstanding.Galt Industries has a debt-equity ratio of 0.4 and its debt is zero coupon debt with a ten-year maturity and a yield to maturity of 8%.
-In describing Galt's equity as a call option,the maturity of this option is:

A) 5 years.
B) 10 years.
C) 20 years.
D) infinite.