Based on the Social Psychological Definition of Loneliness, Who Is

Based on the social psychological definition of loneliness, who is probably most lonely?

A) Mlibo, who has only one friend
B) Busi, who has relatively few (but close) friends and spends about half of her evenings at home alone.
C) Mpumi, who has many friends, but does not have a particularly deep connection with any of them
D) Ayesha, who has many friends, but is so busy that she sees them less than once a week