After Receiving a Diagnosis of HIV,Bobbie Felt Optimistic That He

After receiving a diagnosis of HIV,Bobbie felt optimistic that he could continue living a relatively normal life and actually began to seize the day in ways he had not prior to diagnosis.Bobbie's reaction is an example of

A) delusional reaction to a life-debilitating diagnosis.
B) post-traumatic growth.
C) negative coping strategies.
D) stress-reactive unrealistic optimism.