[单选题]
A brick weighs 50.0 N, xg1 8:jfsx qi6and 9 ,g./ayef 27auutdz.bzzyz/measures 30.0 cm x 10.0 cm x 4.00 cm. What is the maximum pressure it /z..deg 7uuf2 ,9ayz ay/zztbcan exert on a horizontal surface?
A. $1.25 \; Pa$
B. $12.5 \; Pa$
C. $1.25 \; kPa$
D. $12.5 \; kPa$