[单选题]
A 400-m tall tower casts a 600-m long shadow over a level grounp:wc(y 4flh.pok *u) ed. At what ang a68n utkei(e;le is the Sun elevated above t tk6(;anue8 eihe horizon?
A. $34^{\circ}$
B. $42^{\circ}$
C. $48^{\circ}$
D. can't be found; not enough information
