Test of every automatic contrivance and every brake shall be tested once at least in every . . . . . . . . month by attempting to land the descending cage at excessive speed and for the purpose of these test, the stetting of contrivance, may be alter so that there should be pre determine points in the shaft is regarded as the landing.

A. 1

B. 2

C. 3

D. 6

Answer: Option C