Verified Answer :

emsarj

D.

1 3/7 = 1.43

therefore from least to greatest it would need to be 
1.38,1.4,1.43

or in the question

1.38, 1.4, 1 3/7

Therefore the answer would be D.

Hope this helps!

traceydong310
Dbecause 1 3/7 is equal to 1.42..... it's bigger than 1.38 and 1.4 and 1.4 is bigger than 1.38.
hope that helps!