Which of the following statements is false?
A. Top-down parsers are LL parsers where first L stands for left-to-right scan and second L stands for a leftmost derivation.
B. (000)* is a regular expression that matches only strings containing an odd number of zeroes, including the empty string.
C. Bottom-up parsers are in the LR family, where L stands for left-to-right scan and R stands for rightmost derivation
D. The class of context-free languages is closed under reversal. That is, if L is any context-free language, then the language LR={WR:wϵL} is context free.
Answer:B
Which of the following statements is false?
A. Top-down parsers are LL parsers where first L stands for left-to-right scan and second L stands for a leftmost derivation. B. (000)* is a regular expression that matches only strings containing an odd number of zeroes, including the empty string. C. Bottom-up parsers are in the LR family, where L stands for left-to-right scan and R stands for rightmost derivation D. The class of context-free languages is closed under reversal. That is, if L is any context-free language, then the language LR={WR:wϵL} is context free.