Antidepressant drug is

Antidepressant drugs follow which of the following mechanism?

Antidepressant drug among the following is

If a person is suffering from depression. In such situation antidepressant drugs are required.These drugs

(A) A person suffers from depression, in such situation antidepressant drugs are required. (R) The drugs inhibit the enzymes which catalyse the degradation of noradrenaline.