The correct options are
A 15 hours work per day
D Imposition of penalties
Most of the time, the mill owners did not make a full payment - this was a tactic to keep the labourers bound to the mills. 15 hours work per day with no employment guarantee and no fixed income became frequent. These gruesome working conditions led to a resistance. The labourers organised strikes after strikes from 1870 in present-day Mumbai.