A nurse is describing cognitive therapy to a new nurse. Which of the following is the correct explanation as to how cognitive therapy works?

"Cognitive therapy is based on the concept that problems are based on a person's childhood and guides their reaction in the present."

"Cognitive therapy is based on the concept that all problems are based on the client's current state."

"Cognitive therapy is based on the principle that a person's behaviors are determined in nature versus nurture."

"Cognitive therapy is based on the concept that problems can began in the past and are guided by what is currently occurring with the patient."