Which of the following statements are true about Lord Dalhousie ?
(a) Started the Railway Era.
(b) Establishment of independent public works department.
(c) Establishment of Telegram Department in 1852.
(d) Passed post law and started postal stamps in 1854.
1
(a), (b) and (c) only
2
(b), (c) and (d) only
3
(a), (c) and (d) only
4
All of the above