Question 31 - Test II Mathematics Practice Test for the GACE

The teacher drew a two-dimensional shape on the board. All angles are right angles.The figure is attached. She asked her students to classify this shape.

\[\begin{array}{ll} {A.} & \text{Greg says that it is a square.} \\ {B.} & \text{Lana says that it is a rectangle.} \\ {C.} & \text{Tina says that it is a circle.} \\ {D.} & \text{Robyn says that it is a quadrilateral.} \\ \end{array}\]

Which student(s) correctly classified the shape?