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 total length of I-97? Passage:US301 and US50 head east along John Hanson Highway, a six-lane freeway, across the Patuxent River into Anne Arundel County. The highways have junctions with MD424 north of Davidsonville and the southern end of I-97 in Parole. US301 and US50 pass to the north of Annapolis, which is accessed by interchanges with MD665, MD450, MD2, and MD70. The I-595 designation ends at the MD70 interchange. MD2 joins the U.S. Highways along the freeway to cross the Severn River. MD2 splits north from the U.S. Highways at a common interchange with the eastern end of MD450, where the freeway's name changes to Blue Star Memorial Highway. US301 and US50 meet MD179 near Cape St. Claire and pass by Sandy Point State Park right before the highways use the dual-span Chesapeake Bay Bridge to cross the Chesapeake Bay. US301 and US50 meet MD8 on Kent Island in Queen Anne's County. The six-lane freeway parallels MD18 and has numerous right-in/right-out interchange with local roads as it passes through Stevensville and Chester. US301 and US50 parallel MD18 across the Kent Narrows onto the mainland of the Delmarva Peninsula, then the freeway continues through more right-in/right-out interchanges in Grasonville before the U.S. Highways diverge at Queenstown.
Links: a. Kent Narrows b. Maryland Route 179 c. Interstate 97 d. Maryland Route 2
c