What is the difference between steric strain and torsional strain?

a) Steric strain is caused by repulsion between electron pairs, while torsional strain is caused by eclipsed conformations of atoms².
b) Steric strain occurs in cyclic molecules, while torsional strain occurs in linear molecules.
c) Steric strain increases bond stability, while torsional strain decreases bond stability.
d) Steric strain is a type of conformational isomerism, while torsional strain is a type of geometric isomerism.