The plоt shоws the electric pоtentiаl аs а function of position along the x axis. 1) What is the sign of the x component of the electric field at point B? [BDIR] 2) What is the magnitude of the x component of the electric field at point B? [BMAG] 3) What is the sign of the x component of the electric field at point C? [CDIR] 4) What is the magnitude of the x component of the electric field at point C? [CMAG]