15.30. Discontinued Operations and Pro Forma Disclosures ADJUSTMENTS 5.3 In its 2015 annual report, Murphy USA stated, "We use EBITDA and Adjusted EBITDA in our opera- tional and financial decision-making, believing that such measures are useful to eliminate certain items in order to focus on what we deem to be a more reliable indicator of ongoing operating performance and our ability to generate cash flow from operations." The following table was included. $ thousands EBITDA............................................. (Income) loss from discontinued operations, net of taxes ........... (Gain) loss on sale of assets......... Accretion of asset retirement obligations..... Other nonoperating income (loss).......... Adjusted EBITDA... . 2015 $374,960 (38,749) 4,658 1,521 463 $342,853 2014 $475,738 (20,903) (194) 1,200 (10,166) $445,675 a. What does "EBITDA" stand for, and how does Murphy USA calculate it? b. To adjust EBITDA, the company subtracted income from discontinued operations. What does the 2015 amount of $38,749 thousand represent? c. The company subtracted income from discontinued operations of $20,903 thousand in 2014. Can we infer the company discontinued operations in both years