WHAT FORM OF STREET LIGHTING WAS USED IN LONDON WHEN LINK BOYS USE...

29. - DE THI THU HAY CHON LOC DE THI THU TANH CO D AN
DE THI THU HAY CHON LOC DE THI THU TANH CO D AN
29. What form of street lighting was used in London when link boys used to work there? A. Gas lighting B. No lighting at all C. Electric lighting D. Oil lighting