Research on New Experimental Treatments for Major Depressive Disorder, Such

Research on new experimental treatments for major depressive disorder, such as deep brain stimulation and vagus nerve stimulation, suggests that:

A) inducing seizures may not be necessary in the electroconvulsive treatment of major depressive disorder.
B) higher levels of electric current than traditional electroconvulsive therapy uses are necessary to stop major depressive disorder from recurring.
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.