[单选题]
A brick weighs 50.0 N, and measures 308b- cpi h1:mse.0 cmqcsiu-p0z/bn+q y 8i5 x 10.0 cm x 4.00 cm. What is the maximum pressure it can exert on a horizontal si niq805y+bqucz -/p surface?
A. $1.25 \; Pa$
B. $12.5 \; Pa$
C. $1.25 \; kPa$
D. $12.5 \; kPa$