[单选题]
Estimate the observed wavelength zc *can)q56p-9yhb e shs;hw:q*qyc7 for the 65604);u1jkj1 fbjlsc nh nm line in the spectrum of a star which is 100 1hj nk)jjsb0;41u lfcmillion light-years from us.
A. $653 \; nm$
B. $656 \; nm$
C. $659 \; nm$
D. $692 \; nm$
