The Potential Across a Cell Membrane Has Changed Drastically,from -90mV

The potential across a cell membrane has changed drastically,from -90mV to +30mV.In other words,

A) there is a postive charge on the inside of the cell,relative to the outside.
B) there is a negative charge on the inside of the cell,relative to the outside.
C) the resting membrane potential has been established.
D) there is no relative charge difference between the inside and the outside of the cell.