Arrange the following Language Classes in ascending order according to their expressive power, as defined by Chomsky hierarchy :
(A) Context-free languages
(B) Context-sensitive languages
(C) Regular languages
(D) Unrestricted Grammars.
Choose the correct answer from the options given below:
1
(C), (A), (B), (D)
2
(C), (A), (D), (B)
3
(A), (C), (B), (D)
4
(A), (D), (B), (C)