Label each unit cells with the correct structure (rock salt structure, perovskite structure, zinc blende structure).

• A. i. rock salt structure
  ii. zinc blende structure
  iii. perovskite structure
• B. i. zinc blende structure
  ii. perovskite structure
  iii. rock salt structure
• C. i. perovskite structure
  ii. rock salt structure
  iii. zinc blende structure
• D. i. rock salt structure
  ii. perovskite structure
  iii. zinc blende structure

Answer: (A)