Research on New Experimental Treatments for Major Depressive Disorder, Such

Research on new experimental treatments for major depressive disorder, such as deep brain stimulation (DBS) , vagus nerve stimulation (VNS) , and transcranial magnetic stimulation (TMS) , suggests that:

A) inducing seizures may not be necessary in the treatment of major depressive disorder.
B) higher levels of electric current than traditional ECT uses are necessary to stop major depressive disorder from reoccurring.
C) inducing more frequent seizures may be necessary in the treatment of major depressive disorder.
D) major depressive disorder can be cured without delivering electrical current to the brain.