The diagrams illustrate skeletal formulas of some isomers of $\text{C}_6\text{H}_{12}\text{O}$. Which statement is correct?
- A1 and 3 are chain isomers of each other and positional isomers of each other.
- B2 and 3 are functional group isomers of each other and both have a chiral centre.
- C1 and 4 are functional group isomers of each other and both have a chiral centre.
- D2 and 4 are positional isomers of each other and functional group isomers of each other.