What Is the Difference Between a Strain and a Sprain

What is the difference between a strain and a sprain?

A) A muscle strain can be a tear in a muscle; a sprain is a sudden painful contraction of a muscle group.
B) A sprain is a stretch or tear of a tendon; a strain refers to the injury of the ligaments.
C) A strain results from the buildup of lactic acid in muscles; a sprain is the stretch or tear of a ligament.
D) A sprain can be treated conservatively; a strain almost always requires surgical repair.
E) A sprain is a stretch or tear of a ligament; a strain is a stretch or tear in the muscle or tendon.