What is the correct code for calculus of the bile duct with chronic cholangitis with obstruction?

Injuries to the brain can be classified as:

A) open or closed. B) direct or indirect. C) linear or depressed. D) all of the above.

________ is acquired when antibodies from one person are injected into another to help fight infection

A) Artificial active immunity B) Natural passive immunity C) Natural active immunity D) Artificial passive immunity