A, B and C Are Partners Engaged in a Retail

A, B and C are partners engaged in a retail business. Their contribution is ₱20, 000.00 each. D is admitted as a new partner with a contribution of ₱8, 000.00. At the time of his admission, the partnership has an outstanding obligation to E in the amount of ₱80, 000.00. In this case:

A) D is not liable to E for this obligation and his ₱8,000 contribution shall remain with the partnership
B) D is liable to E for this obligation so that after the assets of the partnership amounting to ₱68, 000.00 will be exhausted leaving a balance of ₱12, 000.00, only A, B and C shall be liable jointly or pro rata, out of their separate property.
C) D is liable to E for this obligation so that after the assets of the partnership will be exhausted, leaving a balance of ₱12,000.00, all the partners shall be liable jointly or pro rata, including D, out of their separate property.
D) D will be liable only if he knew of the liability of ₱80,000 at the time he joined the partnership.