Shift-Reduce Parsers Perform the Following

question 9

Multiple Choice

Shift-Reduce parsers perform the following:

• A)Shift step that advances in the input stream by K(K > 1) symbols and Reduce step that applies a completed grammar rule to some recent parse trees, joining them together as one tree with a new root symbol.
• B)Shift step that advances in the input stream by one symbol and Reduce step that applies a completed grammar rule to some recent parse trees, joining them together as one tree with a new root symbol.
• C)Shift step that advances in the input stream by K(K = 2) symbols and Reduce step that applies a completed grammar rule to form a single tree
• D)Shift step that does not advance in the input stream and Reduce step that applies a completed grammar rule to form a single tree.

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Definitions:

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