Which expression has to be present in the following?expression1 ? expr

1.	Which expression has to be present in the following? expression1 ? expression2 : expression3;
A.	expression3
B.	expression2
C.	expression1
D.	All of above
E.	None of these
Answer» E. None of these

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Which expression has to be present in the following?expression1 ? expression2 : expression3;

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Which expression has to be present in the following?
expression1 ? expression2 : expression3;