I am a 3 digit number, my hundred digit is not 5, my tens digit is even, my ones digit is less than 4. Who am I?

Which of the following statements regarding gastrointestinal problems and/or treatments is true? a. gi inflammation is a rare disease that can occur after ingesting food toxins or sustaining injury. b. steroids, aspirin, and motrin don't irritate the stomach. c. antibiotics aren't used to treat gastrointestinal problems. d. bacteria such as h. pylori can induce gastric or stomach ulcers.