Which of the following correctly distinguishes between stereoisomers, constitutional isomers, and different conformations of the same compound?
A) Stereoisomers have the same molecular formula and connectivity but differ in spatial arrangement. Constitutional isomers have different connectivity, while different conformations refer to rotations around single bonds in the same compound.
B) Stereoisomers have different molecular formulas but similar connectivity. Constitutional isomers have different spatial arrangements, and different conformations are completely different compounds.
C) Stereoisomers have different connectivity but the same molecular formula, while constitutional isomers have identical spatial arrangements. Different conformations refer to completely different chemical entities.
D) Stereoisomers are compounds with different molecular formulas and spatial arrangements, constitutional isomers have identical connectivity, and different conformations are unrelated compounds.