∫ The central angle of the sector where the first prize is located is 45+45/2 = 3/2× 45.

The first prize, the second prize and the third prize * * * occupy 360 degrees, and the first prize will be won with a 10% discount.

∴ The probability that the turntable can get a discount of 10% = 3/2× 45/360 =,

So choose C.