The identity element for the binary operation * defined on Q – {0} as a * b = ab/2 ∀ a, b ∈ Q – {0) is

The identity element for the binary operation * defined on Q – {0} as a * b = ab/2 ∀ a, b ∈ Q – {0) is

A

1

B

0

C

2

D

None of these

Answer:

The correct option is C. 2

Note