They may make allowances for a transition phase from student life to adult life, but they get upset when they see the transition of their grown children's live moving away from their expectations and stretching five years to seven years, and beyond.
A.
Parents are too distressed and frustrated that it is impossible for they to see the transition of their grown children’s live moving away from their expectation.
B.
Parents may accept their grown children to delay the transition period from student life to adult life, but they are frustrated when they find their children moving away from what they expected and when they extend the period to too many years.
C.
Since parents don’t accept their grown children to delay the transition from student life to adult life, they are upset to see their children’s live moving away from their expectations and spending five or seven more years.