[单选题]
A brick weighs 50.0 N, and measures 30.0 cm x 10.0 cm x 4.00 cm. What5de g,6l4ru m4wghej 72zp e/r+bpw .k+hv5bdv- 7jio7/9au qio(vujis the maximum pressure it canjj v+ 7ov9oid-( 7/u 5uhqvbia exert on a horizontal surface?
A. $1.25 \; Pa$
B. $12.5 \; Pa$
C. $1.25 \; kPa$
D. $12.5 \; kPa$