Which of the following statements about the uplink channel power control is correct? (Multiple choice)

Which of the following statements about the uplink channel power control is correct? (Multiple choice)
A . The purpose of PRACH power control is to transmit the preamble with as little power as possible while ensuring the success rate of random access of the eNode
C . The eNB initially sets the expected received power of the PRACH preamble, the UE estimates the downlink path loss, and the UE sets the transmit power of the PRACH according to the parameters of the eNB and the path loss.
D . If the PRACH transmit power calculated by the power control algorithm is greater than the maximum transmits power of the UE, the mobile phone will transmit using the PRACH power calculated by the power control algorithm.
E . Regardless of the preamble format used, the PRACH power is the same and will not change according to the preamble format.

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Answer: AB