Question 9 1 pts You have a cell with the following characteristics: ICF MgCl2 concentration - 50 mm E ECF CaCl2 concentration - 50 mm Remember that the ions are Mg2+, Ca2+ and C. Which of the following are TRUE statements? (MA) A. EMg is a negative value B. EC is a negative value C. If the membrane is permeable ONLY to Ca2+, the Vm will be a positive value D. If the membrane is permeable to both Mg2+ and Cl-, but permeability to Mg2+ is 4 times greater than the permeability to Cl-, then Vm will be equal to EMg. E. If the membrane first becomes permeable to Ca2+, the Vm would become positive; then if later, the membrane became permeable to Mg2+ but impermeable to Ca2+, the Vm would return toward and may become negative