How many pi electrons does the molecule below contain?

a$.6$

b$.10$

c$.12$

d$.14$

e$.20$

How many pi systems does the molecule below contain?

a$.1$

b$.2$

c$.3$

d$.4$

e$.5$

How many electrons are in the following molecule's largest conjugated pi system?

a$.2$

b$.4$

c$.6$

d$.8$

e$.10$