Determine if each statement is true or false. Write (T) or (F) on each line, respectively.
a. A compound which has a non-superimposable mirror image is a chiral.
b. Stereoisomers which are non-mirror images of each other are enantiomers
c. A meso compound is achiral and therefore must never have stereocenters.
d. Products produced from optically inactive starting materials will always be optically inactive.