Read the following passage and solve the questions based on it.
The following questions are based on the diagram given below, showing four persons—
A, B, C and D stationed at the four corners of a square piece of plot as shown:
E - East, S - South, W - West and N - North
From the original position, B and D move one and a half lengths of sides clockwise and anti-clockwise respectively. Which one of the following statements is true?