A particular unit cell is cubic with ions of type A located at the corners and facecenters of the unit cell and ions of type B located at the midpoint of each edge of the cube and at the body centered position. A) how many ions of each type are there per unit cell? B) What is the lattice of the structure? (Check to be sure that the number of ions per unit cell given by your description of the structure as a lattice is consistent with your answer to part a) C) What is the coordination number of each ion? D) What is the name commonly given to this crystal structure?