Solve these short problems please I beg

#2) Consider the Hasse diagram below. For each of the following subsets, (i) Find the set of upper bounds (the set may be empty); (ii) Find the least upper bound (if it exists); iii) Find the set of lower bounds (the set may be empty); (iv) Find the greatest lower bound (if it exists). (a) {k. j} (b) {c.g, m } (c) {a, b, j } C #3) For the same Hasse diagram as the last problem, find (a) The minimal elements (b) The maximal elements c) The minimum and maximum elements, if they exist