Which of the following data is needed in the planning of the number of PDCH channels in the GPRS/EDGE system? (Multiple choices)

Which of the following data is needed in the planning of the number of PDCH channels in the GPRS/EDGE system? (Multiple choices)
A . Number of mobile subscribers
B. GPRS/EDGE User Penetration Rate
C. Single-user data traffic
D. GOS for data services
E. Average traffic volume when users are busy

Answer: ABCD