iv$.$ Which of the following statements is most CORRECT?

a$.$ Preferred stock generally has a higher component cost of capital to the firm than does common stock.

b$.$ The value of a warrant to buy a safe, stable stock should exceed the value of a warrant to buy a risky, volatile stock, other things held constant.

c$.$ From the issuer's point of view, preferred stock is less risky than bonds.

d$.$ Whereas common stock has an indefinite life, preferred stocks always have a specific maturity date, generally $25$ years or less.

e$.$ Warrants can sometimes be detached and traded separately from the security with which they were issued, but this is unusual.