The third demerit point received by a person under age 18 will result in what for how long or until what age, whichever is ________. Once this time period is passed, he/she must retake what before the license can be reinstated?
1) 90-day suspension; age 18
2) 6-month suspension; age 21
3) 1-year suspension; age 18
4) Indefinite suspension; age 18