Question: Your customer is having a problem with their cellular device. They read that they should disable roaming on the phone to save money. The customer

Your customer is having a problem with their cellular device. They read that they should disable roaming on the phone to save money. The customer is going out of town and will need to enable roaming. After you enable roaming for the customer, you will need to update information about radio bands, sub-bands, and service providers' IDs.
What kind of cellular update contains information about radio bands, sub-bands, and service providers' IDs?
a. IMEI update
b. Radio firmware update
c. PRI update
d. PRL update

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