A Woman Who Imports Food from Mexico and Spends Several

A woman who imports food from Mexico and spends several months per year in rural Mexico had to have a compound leg fracture pinned and set in Mexico and has returned 3 days later. She now has signs of acute appendicitis and is taken to surgery in Houston. When her appendix is removed, it is found to contain a light-colored, 20.5-cm-long roundworm as well as bile-stained, knobby eggs consistent with Ascaris. How did she acquire this infection?

A) Ingestion of water containing filariform larvae
B) Skin penetration by filariform larvae
C) Skin penetration by rhabditiform larvae
D) Ingestion of food contaminated with the eggs
E) Inhalation of dust carrying the cysts