Q04

MCQ1 mark, −0.33

Let $L_1, L_2$ be any two context-free languages and $R$ be any regular language. Then which of the following is/are CORRECT? I, II and IV only I and III only II and IV only I only

(A)

$L_1 \cup L_2$ is context-free

(B)

$\overline{L_1}$ is context-free

(C)

$L_1 - R$ is context-free

(D)

$L_1 \cap L_2$ is context-free

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