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Read these lines from Passage 1.
"There was their fleet conceal'd. We thought, for Greece
Their sails were hoisted, and our fears release.
The Trojans, coop'd within their walls so long.
Unbar their gates, and issue in a throng,
Like swarming bees, and with delight survey
The camp deserted, where the Grecians lay
The quarters of the sev'ral chiefs they show'd;" (lines 15-21)
What is the meaning of coop'd as it is used in Passage 1?
OA exposed
B. kept
O
C. confined
OD. trapped