If an equal amount is withdrawn by a partner at the beginning of each month for a period of 6 months, the interest on the total amount will be charged for

The correct answer is A. 2.5 months.

If an equal amount is withdrawn by a partner at the beginning of each month for a period of 6 months, the interest on the total amount will be charged for 2.5 months. This is because the interest is calculated on the principal amount, which decreases each month as the withdrawals are made. Therefore, the interest is only charged on the amount that is outstanding for each month.

Option B is incorrect because the interest is charged for 2.5 months, not 3 months.

Option C is incorrect because the interest is charged for 2.5 months, not 3.5 months.

Option D is incorrect because the interest is charged for 2.5 months, not 6 months.