Sean, a junior in college, has difficulty making decisions and when he finally makes a decision he worries about whether it was the right decision. He constantly worries about his courses, future, girlfriend, and getting a summer job. Recently Sean has had heart palpitations and muscular tension. Sean's symptoms are MOST consistent with___________.a. generalized anxiety disorderb. posttraumatic stress disorderc. obsessive-compulsive disorded. bipolar disorder