a) Trace the output for this program segment if input data for mark1, mark2 and mark3 are 57, 43 and 87 respectively. Create a tracing table to show the steps: cin >> markl >> mark2 >> mark3; if (markl > mark2 && markl >= mark3) 1 a = mark1; if (mark2 > mark3) b = mark2; else } else b = mark3; if (mark2 > mark3) ( } else ( a = mark2; if (mark3 > markl) b- mark3; else b-markl; a mark3; if (marki > mark2) b markl; else b = mark2; cout < < XXXX is = " < < a: cout < < endl; cout < < "YYYY is < < bi b) For the code in question, what would be a suitable phrase to replace XXXX and YYYY which shows the better output that is solved by the code. (5 marks)