. A,B and C are partners in a partnership with each contribution P100,000. D is admitted as a new partner with a contribution of P50,000. At the time of his admission, a partnership has a pre-existing obligation to E in the amount of 150,000

1. D is not liable to E for this obligation which was incurred when he was not yet a partner
2. D is liable up to 25,000
3. D is liable up to P50,000
4. D is liable up to 16,667