Which sentence does not use a colon correctly?

a.
we need the following information: names of the guests, table number, and luncheon choice.

b.
here's what we have to do: fold your clothes, find the suitcases, and pack for the trip.

c.
the art appreciation course explores these artists: claude monet, leonardo da vinci, and vincent van gogh.

d.
these gift bags are for: mrs. hernandez, mr. rollins, and miss crane.

warren buffett- the oracle of omaha warren buffett came from a normal type of family in nebraska. when hew as young, he understood the value of investing money and gaining interest on that investment. he strived hard at several jobs, but what made him one of the wealthiest men in the world was his gift for allocating capital within a free market system. warren buffett is an example of a man whose wealth is owed largely to the free enterprise system. buffett was able to allocate his money however he wanted, investing in businesses that he thought could compete effectively. without the free market system, he would not have the right to invest however he wanted, and would not have become so wealthy.

explanation

old disney was more kid oriented as appose to new disney it's more teen oriented.i guess what i'm trying to say is new disney is way more mature and out there then old disney. for instance all you see in new disney is bf/gf drama and old disney it was nothing like that. kids are growing up and as coorpations like disney, nickolden etc they tend to follow what kids follow so they can have more views . therefore   they have inferred   that now days kids want to have relationships and stuff so that's what disney gives them.