The email reminds Puan Siti to

A) call Dr Choi's clinic to confirm her appointment
B)call by Wednesday if she can't make her appointment on Friday.
C)inform Dr Choi's that she doesn't want to reschedule her appointment​

The email reminds Puan Siti toA call Dr Chois clinic to confirm her appointmentBcall by Wednesday if she cant make her appointment on FridayCinform Dr Chois tha class=