Select the proper order from least to greatest for 1/2 ,5/6 , 2/7 , 4/2

a) 4/2 , 5/6, 1/2, 2/7

b) 4/2, 2/7, /6, 1/2

c) 2/7, 1/2, 5/6, 4/2

d) 2/7, 5/6, 1/2, 4/2