Match List I with List II:

| List-I | List-II |
|---|---|
| (A) Logotherapy | (I) Freiderick Perls and Laura Perls |
| (B) Client Centred Therapy | (II) Victor Frankl |
| (C) Gestalt Therapy | (III) Albert Ellis |
| (D) Rational Emotive Therapy | (IV) Carl Rogers |
Fill in the blank with the correct option.
The teacher believed that the student’s sudden lack of interest in class was an ..........., as he had always been enthusiastic and attentive.