Which of the following languages is/are deterministic context-free?
$L_1 = \{ ww^R \mid w \in \{a,b\}^* \text{ and } w^R \text{ is reverse of } w \}$
$L_2 = \{ ww^R x \mid w, x \in \{0,1\}^* \}$
- $L1$ only
- $L2$ only
- Both $L1$ and $L2$
- Neither $L1$ nor $L2$