To get an output `y=1` from the circuit shown below, the input must be

Options

A. a-0, b-1, c-0
B. a-0, b-0, c-1
C. a-1, b-0, c-1
D. a-1, b-0, c-0

Answer

C

Explanation

The Boolean expression of the given circuit is
`Y(A+B).C`
The truth table of the given input singnals as shown in the table.

Rom the tructh table we conclude that output `Y=1`, for the inputs `A=1, B=0, C=1`.
Hence, option (c) is correct.