Determine whether each of the following is true or false.

(a) empty set is a subset of the empty set

(b) empty set is an element of empty set

(c) empty set is an element of {empty set}

(d) empty set is a subset of {empty set}

(e) {a,b} is an element of {a,b,c,{a,b}}

(f) {a, b} is a subset of {a, b, {a, b}}

(g) {a,b} is a subset of the superset of {a,b,{a,b}}

(h) {{a, b}} is an element of the superset of {a,b,{a,b}}

(i) {a,b,{a,b}} - {a,b} = {a,b}