Which one of the following statements is not true ?
(a) In a house circuit, lamps are used in parallel.
(b) Switches, fuses adn circuit breakes should be placed in the neutral wire
(c) An electric iron has its earth wire connected to the metal case to prevent the user receiving a shock
(d) When connecting a three-core cable to a 13 A three-pin plug, the red wire goes to the live pin.