The correct option is C Himachal
Out of the three, the range of Himachal in Himalayas is known as hill station. Himachal is the Vedic name for middle Himalayas. They are extended 60-80km in width whereas 3700-4500m in height. Hill stations such as Dalhousie, Manali, Shimla, Nanital, Musoorie, Darjeeling, etc. are found in this range.