Ooty is situated amidst the Nilgiri Hills at an altitude of 2,240 metres above the sea level. Shimla has an average altitude of 2,206 metres above the mean sea level. Darjeeling is placed at an average elevation of 2,050 metres above the sea level in the lesser Himalayas. Mussoorie, popularly known as the Queen of Hills, is situated at an altitude of 2,003 metres. So, option (a) gives the correct code for the answer.