Identify the correct statements regarding the 'Subsidiary Alliance' system:

(A) The system was devised by Lord Wellesley in 1793.
(B) The British would be responsible for the protection of their allies.
(C) Protection would be from both external and internal threats.
(D) A British armed contingent would be stationed in the territory of the allies.

Choose the correct answer from the options given below:

(B), (C) and (D) only

The correct answer is Option (4) → (B), (C) and (D) only

(A) The system was devised by Lord Wellesley in 1793. (Incorrect).  Subsidiary Alliance was a system devised by Lord Wellesley in 1798.
(B) The British would be responsible for the protection of their allies. (Correct)
(C) Protection would be from both external and internal threats. (Correct)
(D) A British armed contingent would be stationed in the territory of the allies. (Correct)