Consider the following sets, where $U$ represents a universal set:

$U=\{a,\{a,b\},c,d,\{c,d\},e\},A=\{a,\{c,d\},c\},B=\{\{a,b\},c,d\},C=\{a,c,d,e\}(A+B)C$ is the set:

Select one:

a$.\{a,d\}$

b$.\{c\}$

c$.\{d\}$

d$.\{a,c,d\}$