Identify the odd one out from the options given below :

PATTERN : Options A , B and C follow the rule ( FIRST TERM / SECOND TERM ) = ( FOURTH TERM / THIRD TERM  )  which is equal to (2/3)

Option A : ( 6.40/9.60) =(12.80/19.20) = (2/3)

Option B : ( 1.0/1.50) =(2/3) = (2/3)

Option c : ( 0.40/0.60) =(0.80/1.20) = (2/3)

NOW  

In  Option D : left hand side ( 0.50/1.50) = (1/3)

                      Right hand side (0.25/3.0) = (1/8)

This option breaks the pattern here as neither LHS = RHS nor the resultant on either side equal to (2/3).