Patients can receive one of two different types of influenza vaccine, both of which use whole viruses. The nasal spray uses live virus and is an example of a(n) ________ vaccine, while the injection uses killed virus and is an example of a(n)___________ vaccine.

A. attenuated whole agent, subunit
B. subunit, attenuated whole agent
C. inactivated whole agent, attenuated whole agent
D. attenuated whole agent, inactivated whole agent