What is meant by the suicide clause in a life insurance contract?

a$)$ Suicide is a covered loss but only if it occurs within the first two years of the policy is in force.

b$)$ Suicide is a covered loss regardless of when the suicide occurs.

c$)$ Suicide is a covered loss but only if it occurs sometime after the first two years the policy is in force.

d$)$ Death by suicide allows the beneficiary to receive five times the amount of insurance actually purchased.