Step 1: According to the Indian Partnership Act, 1932, the liability of partners in a partnership firm is unlimited. Hence, if the firm's assets are insufficient to repay its debts, the partners' personal (private) assets can also be used. Therefore, Assertion (A) is correct.
Step 2: The Reason (R) says "Liability of a partner for acts of the firm is limited," which is incorrect because in a general partnership, each partner has unlimited and joint liability.
Step 3: Therefore, Assertion (A) is correct, but Reason (R) is incorrect.