Perform the following additions of fractions:

1 4/5 + 2 2/5 = ?
3 8/9 + 5/9 = ?
3/11 + 2 9/11 = ?

a) 4 1/2, 4 2/3, 2 6/11
b) 4 1/4, 4 3/4, 3 7/11
c) 4 3/5, 4 4/5, 3 8/11
d) 4 2/5, 4 5/6, 3 9/11