[单选题]
A 400-m tall tower cck1 rt8dfsl 3( c7rs6o2lf8 nlassln /r :y74kfcts a 600-m long shadow over a level ground. At what angle i slr/4n7ck yf:s the Sun elevated above the horizon?
A. $34^{\circ}$
B. $42^{\circ}$
C. $48^{\circ}$
D. can't be found; not enough information
