Regular Grammar, DFA and NFA

QUESTION 20 Which of the following grammars is a regular grammar? OAs as SaS b The following figure shows the first 2 steps of transforming an NFA to regular expression. What is the correct label for the transition from state 1 state 1 in the 2nd step? ca O A ba*a C. aa*b QUESTION 4 F1123 F 2 3 3 a, h F 3 3 3 ta. a. h For the above DFA which string is not accepted O aabb O abab O baa