[单选题]
A 400-m tall tower casts a 60nx2xljj mqecmd .d k/ dp(t v:26*:d-y0-m long shadow over a level ground. At v)mjk v-:(k06ngaknv what angle is the Sun elevated a (:k mk6vna0knjvv-)gbove the horizon?
A. $34^{\circ}$
B. $42^{\circ}$
C. $48^{\circ}$
D. can't be found; not enough information
