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"Parsing is classified into two categories, i.e. Top Down Parsing and Bottom-Up Parsing. Top-Down Parsing is based on Left Most Derivation whereas Bottom Up Parsing is dependent on Reverse Right Most Derivation"

Refer: Top-down Parsers

Option A is correct

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Option A as top down parsing expands the leftmost non- terminal as oppsed to bottom up parser where expansion takes place considering the right most non terminal.
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Option A is correct.

 

LL is Top Down Parser, it perform Left to Right parsing by Left most derivation.

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answer:- (a)

reason :

a top down parser generates left most derivation while parsing an input string.
Answer:

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