Foundations – pg. 248:
“Anger does not always manifest outwardly with outbursts of anger, irritability. shouting. red face, etc. Some individuals may carry anger inside themselves for years without ever manifesting it. In particular, long-standing depression may be due to repressed anger or resentment. A person who is very depressed may look very subdued and pale, walk slowly and speak with a low voice – all signs which one would associate with a depletion of Qi and Blood deriving from sadness or grief.”
Therefore, the answer is D – all of the above.