When semaphore and warner are installed on the same post, then the stop indication is given when

semaphore arm lowered but warner arm horizontal

both semaphore and warner arms lowered

When semaphore and warner are installed on the same post, then the st

1.	When semaphore and warner are installed on the same post, then the stop indication is given when
A.	both arms are horizontal
B.	semaphore arm lowered but warner arm horizontal
C.	both semaphore and warner arms lowered
D.	none of the above
Answer» B. semaphore arm lowered but warner arm horizontal