In STL Files Euler's Rule for Solids Can Be Written

Multiple Choice

In STL files Euler's rule for solids can be written as

A) No. of faces - No. of edges + No. of vertices = 3 x No. of bodies
B) No. of faces - No. of edges + No. of vertices = No. of bodies
C) No. of faces - No. of edges + No. of vertices = 2 x No. of bodies
D) No. of faces - No. of edges + No. of vertices = 4 x No. of bodies