Directions(Qs. 32 to 36): Complete the following puzzle by answering the questions. [1 Across] I am triangular in shape. I have 5 faces and 4 vertices. I can disperse a white light into seven beautiful colours. I am used to study phenomenon of light. Who am I?

• A. Pyramid          
• B.          Cone          
• C. Prism                          
• D. Triangle