Which one of the following was not a feature of the Subsidiary Alliance of Lord Wellesley?

• A. The British were responsible for protecting the ally from any external threats
• B. All internal threats were to be handled by the ally alone, with no help from the British
• C. The ally was to provide resources for maintaining a British armed contingent stationed in its territory
• D. The ally could not enter into any agreement with other rulers without the permission of the British