(1) Set X Class A TVs, Y Class B TVs and Q Class C TVs.

① 1500X+2 100y=90000

X+Y=50

X=25，Y=25

② 1500X+2500Q=90000

X=35，Y= 15

(3) After estimation, it is easy to conclude that the combination of B and C is not satisfactory and should be discarded.

(2) Scheme 1: 25x 150+25x200=8750 (yuan)

Scheme 2: 35x150 =15x250 = 9000 yuan.

∵9000>8750

Option 2

A: ———————.