Use the rich text editor to upload the following - After adding TreatmentID to the Prescription relation as a foreign key in part (b) of Figure 6.10, is Prescription D still good as the primary key of the Prescription relation? If not, what should be the primary key of the Prescription relation? (a) Treatment (PrescriptionID Order ( Disease Prescription TreatmentID (b) Prescription PrescriptionID TreatmentID PR1 TR1 PR2 TR2 Treatment TreatmentID Disease TR1 TR2 TR3 TR4