Consider the following two sets of LR(1) items of an LR(1) grammar.

X → c.X, c/d           X → c.X, $

X → .cX, c/d           X → .cX, $

X → .x, c/d             X → .d, $

Which of the following statements related to merging of the two sets in the corresponding LALR

parser is/are FALSE?

1. Cannot be merged since look aheads are different.

2. Can be merged but will result in S-R conflict.

3. Can be merged but will result in R-R conflict.

4. Cannot be merged since goto on c will lead to two different sets.