下列不等式组无解的是
A. $\left\{\begin{array}{l}x>2 \\ x>-1\end{array}\right.$
B. $\left\{\begin{array}{l}x>2 \\ x < -1\end{array}\right.$
C. $\left\{\begin{array}{l}x < 2 \\ x < -1\end{array}\right.$
D. $\left\{\begin{array}{l}x < 2 \\ x>-1\end{array}\right.$