In the SIB1 message, if the expected preamble power is -100dbm, the SSB transmission power is 18dbm, and the current RSRP is -90dbm, what is the preamble transmission power of the terminal’s first PRACH?

In the SIB1 message, if the expected preamble power is -100dbm, the SSB transmission power is 18dbm, and the current RSRP is -90dbm, what is the preamble transmission power of the terminal’s first PRACH?
A . 10dBm
B . -108dBm
C . 8dBm
D . -118dBm

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Answer: C