All but which of the following are advantages of group therapy over individual therapy?

All but which of the following are advantages of group therapy over individual therapy?
 
  a. Group therapy allows the client to see how others have coped with similar problems.
  b. Because it involves group interaction, group therapy is especially helpful for people experiencing problems like loneliness and shyness.
  c. Those in group therapy have the extra benefit of social support from the group. d. Clients feel safer expressing their feelings in a group setting.
  e. Group therapy is usually less costly than individual therapy.