Ammonium Cyanate (NH₄CNO) Reacts to Form Urea (NH₂CONH₂)

Ammonium cyanate (NH₄CNO) reacts to form urea (NH₂CONH₂) . At 65°C the rate constant, k, is 3.60 L mol⁻¹s⁻¹. What is the rate law for this reaction?

A) Rate = 3.60 L mol ⁻¹s ⁻¹[NH ₄CNO]
B) Rate = 3.60 L mol ⁻¹s ⁻¹[NH ₄CNO] ²
C) Rate = 0.28 mol L ⁻¹ s ⁻¹[NH ₄CNO]
D) Rate = 0.28 mol L ⁻¹ s ⁻¹[NH ₄CNO] ²
E) Rate = 3.60 L mol ⁻¹s ⁻¹[NH ₂CONH ₂] ⁻¹