[单选题]
A brick weighs 50.0 N, and measures 30.0 cm x 10.0o8loqiij qm r+-; la7. cm x 4.00 cm. Whatrtk0o3;v m.lzglu :+f is the maximum pressure it can exert on a horizontal surfac3l0+rotlgv:u; zm.k fe?
A. $1.25 \; Pa$
B. $12.5 \; Pa$
C. $1.25 \; kPa$
D. $12.5 \; kPa$