A. {.....1, 2, 3, 4} B. {.....0, 1, 2, 3} C. {4, 5, 6, 7, 8, ....} D. {3, 4, 5, 6. 7, 8, ....}

[tex] \frac{1}{3} (11x-12) \leqslant 12 - \frac{1}{3} x \\ \frac{11}{3} x - 4 \leqslant 12 - \frac{1}{3} x \\ \frac{11}{3} x + \frac{1}{3} x \leqslant 12 + 4 \\ \frac{12}{3} x \leqslant 16 \\ 4x \leqslant 16 \\ x \leqslant \frac{16}{4} \\ x \leqslant 4[/tex]
x={....1,2,3,4}(A)