One Saturday Night,Adam,a Police Officer,observes Roy,a 19-Year-Old,riding a Mule Down

One Saturday night,Adam,a police officer,observes Roy,a 19-year-old,riding a mule down Main Street.When Adam moves closer to investigate the odd sight,he notices that Roy is highly intoxicated.The most serious offense Roy is committing is:

A) driving while intoxicated (DWI) .
B) riding an animal while intoxicated (RAWI) .
C) driving under the influence (DUI) .
D) public intoxication.