With reference to the use of electricity in your home, which of the following statements is/are correct? (i) Devices such as television operate on direct current (DC). (ii) Heavy appliances such as refrigerators operate on alternating current (AC). (iii) A power-surge protector is used with a battery back-up. (iv) Emergency lighting in houses operates on 220-volt DC supply. (v) Electric vehicles use battery-based direct current. Select the correct answer: (a) i, ii and v only (b) ii and iii only (c) iii and iv only (d) ii, iii, iv and v only