Which of the following derivation does a top-down parser use while par – McqOptions

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1.	Which of the following derivation does a top-down parser use while parsing an input string? The input is assumed to be scanned in left to right order.
A.	Leftmost derivation
B.	Topmost derivation
C.	Rightmost derivation
D.	Leftmost derivation traced out in reverse
Answer» B. Topmost derivation

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