The structures below show complexes of acetylacetonate.
A. Categorize each complex as either chiral or achiral.
B. Sketch the enantiomer of each chiral complex.
C. Identify the pair of complexes that are enantiomers.

i) A: chiral, B: chiral, C: chiral, D: chiral

ii)

iii) None of the complexes are enantiomers of each other

i) A: chiral, B: achiral, C: achiral, D: chiral

ii)

iii) A and D are enantiomers of each other.

i) A: achiral, B: chiral, C: chiral, D: achiral

ii) 

iii) B and C are enantiomers of each other.

i) A: achiral, B: achiral, C: achiral, D: achiral

ii) All of the complexes don't have enantiomers.

iii) None of the complexes are enantiomers of each other