Lactobacillus is a bacteria that lives inside humans. These bacteria live on the nutrients from our bodies. They help to keep our gut clean and healthy. S. typhi is a bacteria that enters our bodies through contaminated food. This bacteria causes infections in the body. Based on this information, which two statements about the association between these bacteria and humans are true? 1. Lactobacillus shares a parasitic relationship with humans. 2. S. typhi shares a parasitic relationship with humans. 3. Lactobacillus and S. typhi have no relationship with humans. 4. S. typhi shares a mutualistic relationship with humans. 5. Lactobacillus shares a mutualistic relationship with humans.