Which sentence uses a semicolon correctly?
a. When you go camping; it is wise to bring a first aid kit; I always bring one when I go camping.
b. Older animals are usually surly and ill-tempered; accordingly it is unwise to attempt to pet a grown raccoon.
c. Raccoons are smart; otters on the other hand; are even smarter.
d. If you go to the store; please pick up milk, bread, and eggs.