One kilometre is equal to
1. A kilometer is a unit of distance in the International System of Units (SI). It is denoted by km. Km is usually used to express the distance of places or land.
1 Km = 1000 M
2. A meter is also unit of distance as well as length. It is a SI unit denoted by ‘m’. Meter is used to express the distance and length of objects.
1 M = 1/1000 Km
3. Hence, the correct option is B.