Which of the following qualified plans allocate a higher percentage of the planis current contributions to older or longer working eligible employees given all other factos the same feg. salary the same)? 1. A profit sharing plan that uses permitted disparity. 2. An age-based krofit sharing plan. 3. A defined benefit pension plan using unit credit formula. 4. A target benefit pension plan. 2,3, and 4. 2 and 3. 1,2,3, and 4 1 only