Which three form part of correct array declarations? 1. public int a [] 2. static int[] a 3. public [] int a 4. private int a [3] 5. private int [3] a [l 6. public final int[] a OA) 1, 3, 4 OB) 2, 4, 5 091, 2, 6 OD 2, 5, 6 4