The correct option is A Parotid gland
Mumps, also known as epidemic parotitis, is a viral disease caused by the mumps virus. Initial signs and symptoms often include fever, muscle pain, headache and feeling tired. This is then usually followed by painful swelling of one or both parotid glands. Symptoms occur 16 to 18 days after exposure and resolve after 7 to 10 days. Mumps is preventable by two doses of the mumps vaccine.