Arrange the following types of roads in 'Ascending' order on account of their contribution to the total road length of India:

A- Rural Roads
B- National Highways
C- Major District Roads
D- State Highways

BDCA

National Highways- The National Highways constitute only about 2 per cent of of the total road length but carry 40 per cent of the road traffic.
State Highways- These constitute 4 per cent of the total road length in the country.
Major District Roads- They account for 14 per cent of the total road length of the country.
Rural Roads- About 80 per cent of the total road length in India are categorised as rural roads.