This is the problem and its solution. I need a step by step on how it was solved. No step skips. please no cursive

4. Find the circulation of F = (2, z, y) across the C which is a line segment from (2, 0, 1) to (4, 1, 2). r(t) = (2, 0, 1) + ((4, 1, 2) - (2, 0, 1) )t = (2 + 2t, t, 1 +t) 0