Which of the following is true ?

Options

A. An achiral compoun can have chiral centers.
B. An optically inactive species must be achiral.
C. A compound with the R configuration is always the `(+)-` enantiomer.
D. The change from R configuration of a reactant to S configuration of the product always indicates an inversion of configuration.

Answer

a

Explanation

An achiral molecule can have achiral (e.g. `CH_(3)CH_(2)COOH)` or chiral center (e.g. meso compound). (b) A recemate (having chiral centers) is always optically inactive . (c ) The sign of rotation is not related to configuration . (d) The priority sequence of groups may change.