In the fig above, M and N are insulated metal spheres in contact. A negatively charged ebonite rod P is I brought near M. When M and N are Separated and the rod is taken away, which of the following statements is correct

• A.both M and N have acquired negative charges
• B.both M and N have acquired positive charges
• C.M has acquired negative charge and N positive charge
• D.N has acquired negative charge and M positive charge
• E.