Two students while sitting across a table looked down on to its top surface. They noticed that they could see their and each others image. The table top is likely to be made up of

Question

$\begin{array}{1 1} \text{a. Unpolished wood} \\ \text{ b. Red stone} \\ \text{ c. Glass sheet} \\ \text{ d. Wood top covered with cloth} \end{array}$