Which of the following accounts for the difference in the mode of conduction of electricity by metals and aqueous salt solutions?

• A Electrons are present in metals but not in salt solutions
• B Metals are conductors while salts are electrolytes
• C Electricity is carried by mobile elrctrons in metals but by ions is aqueous salt solution
• D salts ionize in aqueous solutions while metals do not
• E Metals are reducing agents while salts are not