What's the meaning of "out and out 'U'"?

I've just taken a quiz and the result of mine is out and out 'U'.

So I wander what the actual meaning of it.

Thanks.

Chinese e-commerce Nowadays, the e-commerce has gradually been a shining star which no one can ignore its' status in the economy. The reason why it can bloom so fast that marvel the commercial area is the advantages on diverse commodities,free accessibility and intelligent storage management. De facto,the e-commerce is not a recent brand-new notion to the public but a relative developed market after a long time since human came into the age of network. Contrast with other ventures following the new technology,it had no doubt if it would be accepted by the costumers because the potential market has already occurred in traditional retail business. Now that the perspective of market was encouraging,the rest thing left to the e-commerce entrepreneurs was that merely had a determining decision to transform the traditional retail's system into the online shop.Due to the advantages of e-commerce，one which was mentioned before ，this strategy certainly had a triumph.