Cobb. Danver, and Evans each owned a one-third interest in the capital and profits of their calendar-year partnership. On September 18 of Year 1 , Cobb and Danver sold their partnership interests to Frank and immediately withdrew from all participation in the partnership. On March 15 of Year 2 , Cobb and Danver eceived full payment from Frank for the sale of their parthership interests. For tax purposes, the partnership Multiple Choice Terminated on September 18 of Year 1. Terminated on December 31 of Year 1. Terminated on March 15 of Year 2 Did not terminate