The molecule shown below contains only one asymmetric center but has four stereoisomers. Explain why.

The molecule contains two stereocenters - a chiral center and a trigonal center. The molecule can also exhibit cis-trans isomerism.

The chiral center alone produces two R enantiomers and two S enantiomers.

The molecule contains two stereocenters - a chiral center and a trigonal center. The molecule produces a pair of enantiomers and a pair of constitutional isomers.

The chiral center alone produces a pair of enantiomers and a pair of diastereomers.