When using Beck's cognitive approach to therapy with a client with Obsessive-Compulsive Disorder:________
a. exposure in vivo or in imagination is not considered beneficial because it produces strong emotions that interfere with cognitive work.
b. exposure in vivo or in imagination is conducted only when the symptoms are so severe that they are interfering with cognitive work and must be alleviated quickly.
c. exposure in vivo or in imagination is considered useful for eliciting ""hot cognitions"" related to the disorder so that they are available for cognitive work.
d. exposure in imagination is considered more useful than exposure in vivo because it elicits target cognitions without the strong emotions that may interfere with cognitive work.