4. You are drawing an octahedron (6 vertices, 8 triangles) and are considering whether to use an indexed polygon representation or a triangle-based representation. Assuming coordinates for vertices are given as 4 floating point values and the indexes for polygons are given as 2-byte unsigned short values, how many bytes will each storage option take? Which is smaller? Note: you do not need to give either representation-only determine the amount of storage the representation would require.