I'm taking a test and have to guess the right answer to the question after the article. Article: If you don't often wash your hands, you can touch lots of viruses from many places and make yourself ill. You may have a cold when you touch your eyes, nose or mouth. One of the most common ways people have colds is by touching their noses or their eyes when there are cold viruses on their hands. If you don't often wash your hands, especially when you're sick, you may make other people ill. So you should follow the advice and wash your hands: * After using the bathroom. * After touching your nose or coughing. * Before eating, serving or preparing food. * After touching pets or other animals. * After visiting the sick people. * When your hands are dirty. There's a right way to wash your hands. Follow these advice and you can keep your hands clean. * Use warm water (not cold or hot). * Wash for 15 seconds . * Wash well under warm running water. Question: If you don't often clean your hands, you may _ easily. Options: A: have a stomachache B: have a cold C: have a toothache D: have a backache
B