Consider the following statements:
1. All X-brand cars parked here are white.
2. Some of them have radial tyres.
3. All X-brand cars manufactured after 1986 have radial tyres.
4. All cars are not X-brand.
Which one of the following conclusions can be drawn from the above statements?
(a) Only white cars are parked here.
(b) Some white X-brand cars with radial tyres are parked here.
(c) Cars other than X-brand cannot have radial tyres.
(d) Most of the X-brand cars are manufactured before 1986.
