The skeletal formulae of two compounds are shown (progesterone and testosterone). Which of the following statements about progesterone and testosterone are correct?
- AThey both contain a ketone group, and they both have geometrical isomers due to the $\mathrm{C{=}C}$ bond.
- BThey have the same molecular formula, and they both have geometrical isomers.
- CThey have the same number of chiral carbons, and they have the same molecular formula.
- DThey have the same number of chiral carbons, and they both contain a ketone group.