What Was the Surprising Result of Langer's Follow-Up with the Residential

What was the surprising result of Langer's follow-up with the residential facility 18 months later?

A) Individuals who received the package of personal hygiene products were much more active than they had been prior to the intervention.
B) Only half as many people in the group who returned the mail-in survey, versus the group who did not, reported decreased satisfaction with the facility.
C) None of the individuals who received a pass for an outing with one of the staff took advantage of the opportunity to take a break from the residential facility.
D) Only half as many people in the group encouraged to make choices had died, as opposed to the group encouraged to take advantage of the support staff.