Given the task definition and input, reply with output. In this task, you're given a question, a context passage, and four options which are terms from the passage. After reading a passage, you will get a brief understanding of the terms. Your job is to determine by searching and reading further information of which term you can answer the question. Indicate your choice as 'a', 'b', 'c', or 'd'. If you think more than one option is plausible, choose the more probable option to help you answer the question.

Question: What is the capital of Henry County, GA? Passage:It ran from McDonough in the north through several communities in Henry County, GA such as Greenwood and Luella into northern Spalding County, GA passing through Experiment, GA and crossing the Central of Georgia Railroad in Griffin, GA. From there it ran south toward Williamson, GA in Pike County, crossing the old A&F line, and on into Concord, GA then on into Meriwether County, GA where it passed through Woodbury, GA. It then continued south toward and through Warm Springs, GA and then further south into Columbus, GA. Portions of this line still exist, mostly from McDonough to Greenwood (Liberty), and from the northern Spalding County line near the old Towaliga Station toward Experiment. This section is currently being refurbished by the Roosevelt Railroad. Then from Griffin south to Georgia State Route 362. Most all the other stretches have been pulled up.
Links: a. Spalding County, Georgia b. Henry County, Georgia c. Henry County, Georgia d. Spalding County, Georgia
b