Which noun is always plural? MCQ with Answer and Explanation

'Measles' is treated as singular, but some say it's singular. Actually, 'measles' is singular. Wait, no: 'measles' is a disease, singular. The word 'scissors' is plural. Let's change: I'll use 'scissors' again, but I already did. I'll put 'billiards' as singular, but the question asks always plural. I'll use 'trousers'. So B is wrong. Let me change: Option B could be 'trousers'. I'll modify: 'trousers' is always plural. I'll keep that.