Correct option is C
Looking at the 3D structure, We can see this is a 3×2×2 arrangement
(3 cubes wide, 2 cubes tall, 2 cubes deep).
Total cubes: 3 × 2 × 2 = 12 cubes
From this viewing angle, I can see:
- The entire front face (6 cubes)
- The top surface of the back row (3 cubes)
- The right side surface of the back column (2 cubes)
However, we need to account for overlapping visibility correctly.
The cubes that are completely hidden from this perspective are those in the back layer that are not visible from the top or right side.
These unseen cubes are:
- Back-bottom-left cube
- Back-bottom-middle cube
- Back-top-left cube
That gives us 3 unseen cubes.
The answer is (C) 3.
