[单选题]
A ball is thrown downward from the tp+n 881jhok5j4qmlw ex a6ar2op of a building ca7 j oev5e .t9iz;anf(xzl()with an initial speed of 25 m/s. It strikes the ground after 2.0 s. How hiej7.cnf )izz(a t5loae; v( x9gh is the building?
A. $89.2 \; m$
B. $50.0 \; m$
C. $19.6 \; m$
D. $69.6 \; m$