If a Security Held by a Bank Falls in Market

If a security held by a bank falls in market value, that loss

A) must be recorded by the bank, no matter what.
B) will be recorded by the bank only if the security is of the type they hold to maturity.
C) will be recorded by the bank only if the security is of the type they often sell before maturity.
D) will be recorded by the bank only if it sells the security.