NEW YORK, Oct 11 (Reuters) - Gannett Co. Inc, the largest U.S. newspaper publisher, reported a lower third-quarter profit on Wednesday because of stock options expensing. Gannett, which publishes USA Today and 89 other local daily papers, said net income fell to $261.4 million from $297 million in the same quarter a year ago. Earnings from continuing operations were $1.11 a share, compared with $1.13 a share a year ago. Analysts expected $1.11 per share, according to Reuters Estimates. Stock options expensing cost the company $6.4 million, or 3 cents a share, after taxes. Gannett said per-share earnings would have...