Answer is B).
1. True as TDP uses LMD (left most deriviation) and BUP use reverse of RMD (right most deriviation).
2. True as a recursive descent parser is a kind of top-down parser built from a set of mutually recursive procedures and LR parser which is BUP uses stack .
3. Backtracking is not for bottom up parser BUP as shift-reduce parser's efficiency is from doing no backups or backtracking.