For Gauss's law, mark the correct statement(s). 

If we displace the enclosed charges (within a Gaussian surface) without crossing the boundary, then both $\overrightarrow{\mathrm{E}} \mathrm{and} \mathrm{\varphi }$ remain same. 

If we displace the enclosed charges without crossing the boundary, then $\overrightarrow{\mathrm{E}}$ changes but $\mathrm{\varphi }$ remains the same. 

If the charge crosses the boundary then both $\overrightarrow{\mathrm{E}}$ and $\mathrm{\varphi }$ would change.

If the charge crosses the boundary, then $\mathrm{\varphi }$ changes but $\overrightarrow{\mathrm{E}}$ remains the same.