2. Which statement is true regarding the different types of cubic unit cells? Select all that apply. Insert letters without spaces or commas, example: ABCD. A. Simple cubic unit cell has two atoms per unit cell whereas body centered cubic unit cell has four atoms per unit cell B. A fraction of a comer sharing atom is 1/8 in face centered cubic unit cell C. The coordination number for body centered cubic is 12 D. A fraction of face sharing atom is 1/2 in face centered cubic unit cell E. None of these statements are true