Question: In the computation of the Check Digit (CD) for an International Mobile Equipment Identity (IMEI), what happens when the sum obtained in Step 2 ends in a digit other than 0?
Option 1: The CD is set to the sum obtained in Step 2 without any modification.
Option 2: The CD is set to the next higher number ending in 0, minus the sum obtained in Step 2.
Option 3: The process reverts to Step 1, redoing the doubling of odd-labelled digits with an adjustment.
Option 4: The CD is always set to a default value of 5 when the sum does not end in 0.
Explanation: According to the specified procedure for computing the Check Digit (CD) from an IMEI, if the sum obtained after combining the modified odd digits and the even digits (Step 2) does not end in 0, the CD is calculated by subtracting this sum from the next higher number that does end in 0. This ensures the CD always reflects a validated check against the IMEI's integrity.