In polar form the term, \(\frac{∂θ}{∂y}\) is given by______

• A. \(\frac{∂θ}{∂y}=\frac{sinθ}{r} \)
• B. \(\frac{∂θ}{∂y}=cosθsinθ\)
• C. \(\frac{∂θ}{∂y}=\frac{cosθ}{r}\)
• D. \(\frac{∂θ}{∂y}=\frac{sin2θ}{r}\)