The correct options are
A They are not uniformly distributed across all the districts in Karnataka.
B Kodagu district has no railway tracks passing through it.
C The districts of Hassan and Ramnagar have an average of 150 to 200 km long railway track.
The first railway line in Karnataka was opened in 1864 between Bengaluru and Madras. Even though railways are a very good mode of transport, they aren't used extensively in Karnataka. This is mainly because the distribution of railway tracks across the districts of Karnataka is not uniform. Bengaluru, Ballari, Belagavi, Hassan, Uttara Kannada, Chitradurga, Udupi, Ramnagar and Dakshina Kannada districts have an average of 150 to 200 km long railway track. On the other hand, Kodagu district has no other railway track.