Holes of a sieve tray are arranged in triangular pitch of _________________ times the hole diameter?
A. 1.5 to 2
B. 2.5 to 5
C. 5 to 10
D. 10 to 15
A. 1.5 to 2
B. 2.5 to 5
C. 5 to 10
D. 10 to 15