Which of the following grammars is (are) ambiguous?(A) s → ss | asb | bsa |(B) s → asbs | bsas | λ(C) s → aABA → bBbB → A | λ where λ denotes empty stringChoose the correct answer from the options given below:

• A. (A) and (C) only
• B. (B)only
• C. (B) and (C) only
• D. (A) (B) and (C)