Which of the following statements represents the main difference between a relay and a contactor?（）<br>A:Contactors control current and relays control voltage<br>B:A relay is series connected and a contactor is parallel connected<br>C:Contactors can handle heavier loads than relays<br>D:Contactors are made from silver and relays are made from copper

Which of the following statements represents the main difference between a relay and a contactor?（）
A:Contactors control current and relays control voltage
B:A relay is series connected and a contactor is parallel connected
C:Contactors can handle heavier loads than relays
D:Contactors are made from silver and relays are made from copper

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