The correct answer is: A. Rs. 11,000
The amount of subscription to be credited to Income and Expenditure Account is the amount of subscription received during the year. This is calculated by taking the current subscriptions and subtracting the arrears and advances. In this case, the current subscriptions are Rs. 10,500, the arrears are Rs. 500, and the advances are Rs. 800. Therefore, the amount of subscription to be credited to Income and Expenditure Account is Rs. 10,500 – Rs. 500 – Rs. 800 = Rs. 11,000.
Option B is incorrect because it is the total amount of subscriptions received, including arrears and advances. Option C is incorrect because it is the total amount of subscriptions due, including arrears. Option D is incorrect because it is the amount of subscriptions received after adjusting for arrears and advances.