Which of the following statements regarding the process for determining a partnership's tax year-end is true? Only the partners' profits interests are relevant when determining if a partnership has a majority interest taxable year: Under the principal partners test, a principal partner is defined as a partner having an interest of 3% or more in the profits or capital of the partnership. The least ageregate deferal test utilies the partners' capital interests to measure the amount of aggregate deferral. A partnership is required to use a calendar year-end if it has a corporate partner. None of the above is true