Select the odd group of numbers.

(NOTE: Operations should be performed on the whole numbers, without breaking down the numbers into its constituent digits. E.g.13 - Operations on 13 such as adding /subtracting /multiplying etc. to 13 can be performed. Breaking down 13 into 1 and 3 and then performing mathematical operations on 1 and 3 is not allowed)

A

(6 - 60 - 50)

B

(7 - 70 - 68)

C

(8 - 80 - 70)

D

(9 - 90 -80)