Should you take a lump sum for your the lottery win or a yearly amount?

Prepare to be shocked. That Mega Millions $400 million jackpot game today - how much do you think you'll get? The prize comes either as a lump sum or annuity. But what exactly is the difference between those two options? And, more importantly, how much will you finally be able to bank? The answer is a big surprise. Watch closely to find out…