Which Size Letterhead Is Appropriate for Most Business Correspondence?
A) $\times$

Which size letterhead is appropriate for most business correspondence?

A) 5 1/2 $\times$ 8 1/2 inches
B) 7 1/4 $\times$ 10 1/2 inches
C) 8 1/2 $\times$ 11 inches
D) 17 $\times$ 22 inches