Which of the following statements about fluorescent lamps is correct? Hint: Section 17.4 Question 7Answer a. Once an arc is struck in a fluorescent lamp, the ionized mercury vapor reduces its conductivity, limiting the flow of current. b. The ballast in fluorescent and HID lamps serves as a transformer to boost voltage and a choke to limit the flow of current. c. Fluorescent lamps can be operated without a ballast because they self-limit their current consumption. d. Fluorescent lamps have positive electrical resistance, meaning that the resistance increases with the flow of current. e. Fluorescent lamps don't need a higher voltage to initiate the electric arc