If an X-Ray with a Wavelength of 185 Pm Is $\theta$

Multiple Choice

If an X-ray with a wavelength of 185 pm is diffracted at an angle 2 $\theta$ =16.9, according to the Bragg equation (n $\lambda$ =2 d sin $\theta$ ) , what is the distance between layers of the crystal that give rise to this diffraction? Assume n= 1 in this problem.

A) 610.9 pm
B) 305.5 pm
C) 629.4 pm
D) 1260 pm
E) 198.1 pm