The ground detection system, shown in the illustration for a low- voltage, three-phase system has a ground in line "A". Therefore, lamp "A" will burn __________.

A.dimly or be out, and lamps "B" and "C" will burn brightly
B.normally, and lamps "B" and "C" will burn dimly or be out
C.brightly, and lamps "B" and "C" will burn dimly or be out
D.brightly, and lamps "B" and "C" will burn normally