The combinational circuit shown below has three data lines D1, D2,and D3 while one select line S.
When the control line is high, the circuit is to detect when one of the data lines has ‘1’ on it. No more than one data line will ever have '1' on it. When the control line is low, the circuit will output ‘O’, regardless of what is on the data lines. The output Y of the combinational circuit will be: