Correct Answer: (c) 135 years
Solution:Currently, for date and year, Gregorian Calendar is being used which is internationally used civil calendar. In order to get Vikram Samvat (57 B.C.) 57 is to be added in the current calendar and to get the Saka Samvat (78 AD), 78 is to be subtracted from current calendar. Hence, Vikram Samvat is 2019+57=2076 and Saka Samvat is 2019-78=1941. Hence, the different between Vikram Samvat and Saka Samvat is 2076-1941=135 years.