[单选题]
The electron of a hyo86ps fq.fpy:drogen atos8+z kwl8v0qsg vmjz 70lp *e5m makes a transition from the n = 5 state to the n = 2 state. What is the wavelengtp*qzvm8 sw j7zgv 0+k58le0 lsh of the emitted photon?
A. $344 \; nm$
B. $434 \; nm$
C. $443 \; nm$
D. $523 \; nm$