The rate law for reaction \[A+2B=C+2D\] will be

• A.                 Rate \[=K[A]\,[B]\]        
• B.                 Rate \[=K[A]\,[2B]\]
• C.                 Rate \[=K[A]\,{{[B]}^{2}}\]         
• D.                 Rate \[=K\frac{[C]{{[D]}^{2}}}{[A]{{[B]}^{2}}}\]