The grammar G: S SS | a | b is ambiguous. Check all and only the strings that have exactly two leftmost derivations in G.

The grammar G: S SS | a | b is ambiguous. Check all and only the str

1.	The grammar G: S SS \| a \| b is ambiguous. Check all and only the strings that have exactly two leftmost derivations in G.
A.	bbb
B.	ab
C.	All of the mentioned
D.	None of the mentioned
Answer» D. None of the mentioned