Week 1 Challenge 2
case 1:

Max stress - 2.697e07 N/mm^2.

Max displacement - 9.384e-2 mm

max strain - 5.643e-05
Case 2:

Max stress - 5.138e07 N/mm^2.

Max displacement - 2.119 e-1 mm

max strain - 1.389e-04
Case 3:

Max stress - 4.856e04 N/mm^2.

Max displacement - 5.3 e-4 mm

max strain - 1.367e-07
Case 2 I section beam is the best suit, the internal stress developed inside is higher,displacement is lesser, strain developed is lesser.