What was the result of Londoners killing thousands of the city's cats and dogs? A. It dramatically decreased the spread of the disease. B. It probably increased the disease by removing animals that hunted rats. C. It caused a massive eruption of new cases as a result of the failure to bury the animals properly. D. It probably helped to spread the disease to other cities, as people who wished to protect their pets carried the plague with them as they fled the city.