OR law - O/P level for given expression

Q.  What does the below stated OR Law imply, while performing OR operation of an input with '1'?

Expression of OR Law: A+ 1 = 1
- Published on 29 Sep 15

a. Output will always be equal to input
b. Output will always be high
c. Output will always be low
d. Output will always be same

ANSWER: Output will always be high

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