Which of the numbers given are rational?
Select all that apply:
a) 1.421490...
b) 18.12270¯¯¯¯¯(repeat bar over 70)
c) 32.74178¯¯¯¯¯(repeat bar over 78)
d) 30.346203...
e) 33.2406¯¯¯(repeat bar over 6)