All About Animals has two product​ lines: Cat food and Dog food. Contribution margin income statement data for the most recent year​ follow: Total Cat Food Dog Food Sales revenue ​$415,000 ​$330,000 ​$85,000 Variable expenses ​$61,000 ​$21,000 ​$40,000 Contribution margin ​$354,000 ​$309,000 ​$45,000 Fixed expenses ​$101,000 ​$49,000 ​$52,000 Operating income​ (loss) ​$253,000 ​$260,000 ​$(7,000) If​ $13,000 of fixed costs will be eliminated by discontinuing the Dog food​ line, how will operating income be​ affected?