Option 1: The Chief Commissioner was the executive head of category A states. The Rajpramukh was the executive head of category B states. The Governor was the executive head of categories C and D states.

This option is incorrect. According to the statement, the Chief Commissioner was the executive head of category A states. However, it states that the Rajpramukh was the executive head of category B states, which is incorrect. Also, the option states that the Governor was the executive head of categories C and D states, which is also incorrect. Therefore, this option is not correct.

Option 2: The Rajpramukh was the executive head of category A states. The Chief Commissioner was the executive head of categories B and C states. The Governor was the executive head of the category D states.

This option is incorrect. According to the statement, the Rajpramukh was the executive head of category A states. However, it states that the Chief Commissioner was the executive head of categories B and C states, which is incorrect. Also, the option states that the Governor was the executive head of the category D states, which is also incorrect. Therefore, this option is not correct.

Option 3: The Governor was the executive head