A book is at rest on top of a table. Which of the following is correct?

Question

$\begin{array}{1 1} (a)\;\text{There is no force acting on the book.} \\ (b)\; \text{The book has no inertia.} \\ (c)\; \text{There is no force acting on the table.} \\ (d)\; \text{The book is in equilibrium.} \end{array}$