Que. 
Which of the following statements is false?

a. 
Topdown parsers are LL parsers where first L stands for lefttoright 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. 
Bottomup parsers are in the LR family, where L stands for lefttoright scan and R stands for rightmost derivation. 
d. 
The class of contextfree languages is closed under reversal. That is, if L is any contextfree language, then the language LR={WR:wϵL} is context free. 

Answer:(000)* is a regular expression that matches only strings containing an odd number of zeroes, including the empty string. 