Let Be a Scalar Field and F Be a Vector

Multiple Choice

Let be a scalar field and F be a vector field, both assumed to be sufficiently smooth. Which of the following expressions is meaningless?

A) $\textbf{ curl (grad }$ 11ee7bac_4a3a_9aaa_ae82_759e3f104991_TB9661_11 )
B) $\textbf{ div (curl F) }$
C) $\textbf{ grad (div F) }$
D) $\textbf{ div (grad }$ 11ee7bac_4a3a_9aaa_ae82_759e3f104991_TB9661_11 )
E) $\textbf{ curl (divF) }$