[单选题]
If the scattering angle in Compton's scdp)bfes* 8m0uattering is 90e. What is the wvh.wnx6e wrt s4c 4w /e2mt+r(avelength shift?6 wxr.4m v +(2re/tshcwenw4 t
A. $1.22 \times 10^{-12} \; m$
B. $2.43 \times 10^{-12} \; m$
C. $3.65 \times 10^{-12} \; m$
D. $4.85 \times 10^{-12} \; m$