Which of the following is/are true about psychological disorders in the middle ages?

These are the options for the question :Which of the following is/are true about psychological disorders in the middle ages?

i. Demonology and superstition were used as explanations of psychological disorders.
ii. Mental anguish and conflict were considered as reasons for psychological disorders.
iii. Disturbed interpersonal relationships were emphasised to explain mental disorders.
iv. There was emphasis on deinstitutionalisation for people with psychological
disorders.
a. Only i is true
b. i and ii are true
c. Only iii is true
d. ii and iv are true

The correct answer is -b. i and ii are true