Which chart correctly identifies the properties of electric and magnetic fields?

a.
property electric field magnetic field
can be produced by moving electric charge x x
have two sides with opposite characteristics x
can make metals, such as nickel, iron, and cobalt, into magnets x
can be turned on or off with a swtich x x

b.
property electric field magnetic field
can be produced by moving electric charge x x
have two sides with opposite characteristics x
can make metals, such as nickel, iron, and cobalt, into magnets x x
can be turned on or off with a swtich x

c.
property electric field magnetic field
can be produced by moving electric charge x
have two sides with opposite characteristics x x
can make metals, such as nickel, iron, and cobalt, into magnets x x
can be turned on or off with a switch x

d.
property electric field magnetic field
can be produced by moving electric charge x
have two sides with opposite characteristics x x
can make metals, such as nickel, iron, and cobalt, into magnets x x
can be turned on or off with a switch x