Regarding the LTE random access preamble format, which of the following statements are correct? (Multiple choice)
A . The choice of random-access preamble format is mainly affected by multipath environment
B . The choice of the random-access preamble format is mainly affected by the coverage radius of the cell.
C . The random-access preamble format is notified by the eNodeB to the UE through the SI
E . Random access preamble format is randomly selected by the UE
Answer: CD