For static electric and magnetic fields in an inhomogeneous source-free medium, which of the following represents the correct form of two of Maxwell's equations?
- $\begin{array}{II}\nabla \bullet \mathbf{E}=0 \\ \nabla \times \textbf{B} = 0 \end{array} $
- $\begin{array}{II}\nabla \bullet \mathbf{E}=0 \\ \nabla \bullet \textbf{B} = 0 \end{array}$
- $\begin{array}{II}\nabla \times \mathbf{E}=0 \\ \nabla \times \textbf{B} = 0 \end{array}$
- $\begin{array}{II}\nabla \times \mathbf{E}=0 \\ \nabla \bullet \textbf{B} = 0 \end{array}$