Vinco - 1.0

Vinco is a game in which you answer a series of 15 questions of increasing difficulty. The first five questions are very easy (to the point of laughter), but the last questions are extremely difficult.
Every question is multiple choice question with four possible answers. There are no tricks (like "none of the above"), just four straight-up choices, one of which is the correct answer.
Since you are not likely to know all 15 answers, you have three hint systems to help you along the way.