As we know that 3 events are said to be mutually exclusive events if –

P(A ∪ B ∪ C) = P(A) + P(B) + P(C)

⇒ P(A ∪ B ∪ C) =

As probability can never be > 1

∴ A,B and C are not mutually exclusive events.

Statement is false

∴ Option (b) is the only correct choice.