GATE Electrical 2014 Set 3 | Question: 3

Question

Let  $\nabla .(fv)=x^2y+y^2z+z^2x$ , where $f$ and $v$ are scalar and vector fields respectively. If $v=yi+zj+xk$ then $v.\Delta f$ is

• A. $x^2y+y^2z+z^2x$
• B. $2xy+2yz+2zx$
• C. $x+y+z$
• D. $0$