A plaintiff, a resident of State A, filed a complaint against two defendants in a state court in State B, where a car accident between the parties took place. The claims were based solely on state law. One defendant resides in State B, where the accident occurred, and another resides in State C, a neighboring state. The complaint alleged $100,000 in damages. The defendant who resides in State B was personally served with a complaint and summons while he was walking to work. The defendant who resides in State C was served by a process server in the forum state after attending a business meeting in that state. Shortly thereafter, both defendants filed a notice to remove the case to the federal district court in the district where the case was filed. The plaintiff filed a motion to remand. The federal district court granted the motion. What is the most likely reason that the motion was granted