Question

Which of the following describes a handle (as applicable to LR-parsing) appropriately?

(a) Position where  next reduce or  shift  operation will occur

(b) The next step has use of Non-terminal for reduction

(c) Used for reduction in a coming-up  step along with a position in the sentential form where the next shift or reduce operation will occur

(d) Used in the next step for reduction along with a position in the sentential form where the right hand side of the production may be found

The question was asked in exam.

Query is from Top-Down Parsing in chapter Topdown Parsing of Compiler

Answer 1

Correct answer is (d) Used in the next step for reduction along with a position in the sentential form where the right hand side of the production may be found

For explanation I would say: the next step in LR parsing shall have a Reduction.