Suppose U = {1, {2, 3}, 3, d, {d, e}, e} is a universal set with the following subsets:

A = {{2, 3}, 3, {d, e}}, B = {1, {2, 3}, d, e} and C = {1, 3, d, e}.

Which one of the following sets represents B ∩ C? (the intersection of B and C)

Select one:

a.

{d, e}

b.

{3, {2, 3}}

c.

{1, 3, d, e}

d.

{1, d, e}