PreparationMock TestRRBOnline RRB NTPC Stage 1 Mock TestBy salma H.C.F of 4 * 27 * 3125, 8 * 9 * 25 * 7 and 16 * 81 * 5 * 11 * 49 is:(A) 180(B) 360(C) 540(D) 1260