If work of piling is to be carried out at night, minimum........... 'lux luminance lights should beused.

If work of piling is to be carried out at night, minimum........... 'l

1.	If work of piling is to be carried out at night, minimum........... 'lux luminance lights should beused.
A.	60
B.	200
C.	150
D.	100
Answer» E.