Important Battles question: The Battle of Pollilur (1780) during the Second Anglo-Mysore War resulted in?

The verified answer to “Important Battles question: The Battle of Pollilur (1780) during the Second Anglo-Mysore War resulted in?” is Hyder Ali's decisive victory over British forces under Colonel Baillie, option B. The source-backed, question-specific record explains: The Battle of Pollilur (September 10, 1780) was fought between Hyder Ali's forces and the British-led force under Colonel William Baillie. Hyder Ali and his son Tipu Sultan jointly won a decisive victory, capturing Colonel Baillie and nearly the entire British force. This evidence establishes the historical relationship required in this Important Battles item. A correct solution must preserve the exact battle, date, participants, commander, location, outcome or significance requested by the stem. Similar periods, genres or national traditions do not make two battle facts interchangeable. Option B gives Hyder Ali's decisive victory over British forces under Colonel Baillie and satisfies every condition stated in the question. The remaining choices—British victory over Tipu Sultan, French victory and Nizam's victory—do not satisfy the complete requirement. The reliable checking method is to identify the named battle first, recall or verify its verified participant or outcome, and then read qualifiers such as “both works,” “original language,” “first published,” “correctly matched” or “incorrectly matched.” These qualifiers determine what counts as the answer. Replaying that method for this Important Battles question confirms Hyder Ali's decisive victory over British forces under Colonel Baillie without relying on option position.