triphasic study of the liver , the question was about the timing of protocol of triphasic study of the liver

(mcq) triphasic study of the liver , the question was about the timing of protocol of  triphasic study of the liver:
- 20-25 , 50-55 and 3-5 mins (mostly true).
- arterial ( 20-30 seconds), PV phase (60-70 seconds), delayed (3-5 minutes) (true)