tmontefalcon7522 tmontefalcon7522 16-12-2022 Health Answered An estimated ________ of adults older than 50 have atrophic gastritis, making them vulnerable to B12 deficiency.a. 30 to 40%b. 5 to 10%c. 40 to 50%d. 50 to 75%e. 10 to 30%