In a Brick Veneer Assembly with Punched Windows, Vertical Expansion

In a brick veneer assembly with punched windows, vertical expansion joints should be provided at a maximum distance of

A) 30 ft in the field of the wall and 30 ft from a wall's corner.
B) 20 ft in the field of the wall and 10 ft from a wall's corner.
C) 30 ft in the field of the wall and 20 ft from a wall's corner.
D) 40 ft in the field of the wall and 40 ft from a wall's corner.