[单选题]
A brick weighs 50.0 N, and xutm(ixh 5b2f3 tdz)gotn .); measures 30.0 cmohbpk v7*w3/odl5 vtc :y*qdbp*h;6rxk n(( e x 10.0 cm x 4.00 cm. What is the maximum pressure it can exert on a horit x(6;l *ob:yk /qvvpn3rc* (7ed5pd obhk*hwzontal surface?
A. $1.25 \; Pa$
B. $12.5 \; Pa$
C. $1.25 \; kPa$
D. $12.5 \; kPa$
