Note: The figures shown are representative.

From the given unfolded net of the cube, we can identify pairs of opposite faces:

1. Solid dot ($\bullet$) is opposite to Open circle ($\circ$).

2. Open triangle ($\Delta$) is opposite to Solid triangle ($\blacktriangle$).

3. Blank square is opposite to the other Blank square.

Opposite faces can never be adjacent or visible simultaneously on the folded cube:

• In (B), the open triangle $\Delta$ and the solid triangle $\blacktriangle$ appear as adjacent faces, which is impossible since they are opposite.

• In (C), two blank faces are visible simultaneously, which is impossible since the only two blank faces on the cube are opposite to each other.

• In (D), the open triangle $\Delta$ and the solid triangle $\blacktriangle$ are shown as adjacent faces, which is impossible.

• In (A), the top face is the solid dot $\bullet$, the front face is the open triangle $\Delta$ pointing upwards toward the dot, and the right face is one of the blank faces. None of these three faces are opposite to each other, correctly representing the cube.

Therefore, (A) is the correct option.