Definition: In this task, you are given a context and four options. Each option is a suggested ending for the context. You should read the context and pick the best ending for the context. Please answer with "A", "B", "C", and "D".
Input: [header] How to ease muscle pain from chikungunya [title] Determine if you have muscle pain. [step] The chikungunya virus is transmitted through the bite of aedes mosquitoes. As the virus enters the body, it runs through the blood vessels. <sep> (A) Aedes mosquitoes, in particular, form large red blood vessels in order to infect the blood, making the blood vessels secrete the virus. Aedes mosquitoes are the largest mosquito in the web and are known to carry the virus through blood more often than other mosquito-infected cells. (B) Under 30% of normal healthcare people have muscle pain, as the virus causes muscle spasms, so only non-fluids such as blood and water are used. [substeps] Unfortunately, there is no current scientific background on chikungunya virus. (C) The virus mainly affects the human endothelial and epithelial cells known as fibroblasts. These fibroblasts usually make up the muscle tissue. (D) During this time, there is a bright red blood blister forming. Because of this, it is rare for an adult male to have ketoacidosis and ingest the virus.
Output:
C