Correct Answer: (e) None of the above
Note: In 1850, experimental Electric Telegraph started for the first time in India between Calcutta (Kolkata) and Diamond Harbor. In early 1881, Oriental Telephone Company Limited of England opened telephone exchange at Calcutta (Kolkata), Bombay (Mumbai), Madras (Chennai) and Ahmedabad. On 28th January 1882, the first formal telephone service was established. So, none of the options seems to be correct.