Pick up the correct statement from the following:

• The slenderness ratio of lacing bars for compression members should not exceed 145
• The minimum width of lacing bar connected with rivets of nominal diameter 16 mm, is kept 50 mm
• The minimum thickness of a flat lacing bar is kept equal to one-fortieth of its length between inner end rivets
• The angle of inclination of lacing bars and the axis of the members should be between 40° and 70°
• All the above.