[单选题]
X-rays with a wavelength of 0.wfw+6v1 bo(ruzx 3er11y6 ajb0010j:otfuxdjv bxb)(t:d d;9 :k:0 nm are scattered by free electrons at 130e. What is the kineti:xb:tfd9) uv;j( dtdo :j bkx:c energy of each recoil electron?
A. $2.5 \; MeV$
B. $5.0 \; MeV$
C. $7.5 \; MeV$
D. $10 \; MeV$