Full blown depression is widely acknowledged as a severe medical illness and is commonly treated by pharmaceutical solutions. After decades of research and numerous experiments effective drugs have been developed which, on average, have successfully treated over 60% of depressive patients with relatively minor side effects. Individuals that suffer from common depression often respond better to the drug therapy than the minority group who suffer from reversed symptom depression. Experimental research indicates that 12 weeks of drug therapy significantly reduces a number of symptoms including loss of appetite, sadness, lack of energy, anxiety, and feeling of guilt. People who are less likely to respond well to the drug therapy have several other treatment options including cognitive behavioural therapy (CBT) and in extreme cases electro convulsive therapy (ECT).

Question: Research has shown that drug therapy is ineffective for more than half of depressed individuals.
Options:
A. true, B. false, C. uncertain
Answer: "B"