Which of the Following Is Valid Reason for Making a 754

Which of the following is valid reason for making a 754 election?

A) An incoming partner pays more for a partnership interest that his or her proportionate share of partnership assets.
B) Partners are able to increase their basis in the partnership interest upon the sale of a partnership interest.
C) Partnerships can increase,but not decrease,their basis in partnership assets.
D) A partnership can reduce its basis in assets upon cash distributions to partners.