Shopping Mall contracts with Gardener to do landscaping work for $30,000 . The next lowest bid for the work had been $45,000. Mall pays $15,000 of the total price up front. After doing a substantial part of the work, Gardener breaches. Mall finds another company that will finish the work for $20,000 . What are Mall's expectancy damages for Gardener's breach? a. Zero b. $15,000 c. $5,000 . d. $20,000 .