What are the direction ratios of the normal to the plane $2x-y+2z+1=0$?

For a plane equation of the form $ax+by+cz+d=0$, the direction ratios of the normal to the plane are given by the coefficients $⟨a,b,c⟩$.Comparing $2x-y+2z+1=0$ with the standard form:$a=2$, $b=-1$, $c=2$.The direction ratios are $⟨2,-1,2⟩$.Direction ratios can be scaled by any constant $k$. Dividing by $2$:$⟨1,-1/2,1⟩$.Option B matches this scaled version.