The second order Bragg diffraction of X-rays with `lambda=1.0 Å` from a set of parallel planes in a metal occurs at an angle `60^(@)`. The distance between the scattering planes in the crystals is
A. `0.575 overset(@)A`
B. `1.00 overset(@)A`
C. `2.00 overset(@)A`
D. `1.15 overset(@)A`