Julio has 3 identical blocks. Each block has a black face opposite a white face, and one grey face. What are the possible arrangements of the blocks?

Step 1: Understand the block properties.
The problem states that Julio has 3 identical blocks. For each block:

• A black face is opposite a white face.
• There is a grey face.

This implies that the blocks have faces of three colors: Black (B), White (W), and Grey (G).
The most common interpretation for such puzzles, given the options, is that the blocks have 2 Black faces, 2 White faces, and 2 Grey faces.
To satisfy "a black face is opposite a white face", we must have one pair of B/W faces and another pair of B/W faces. This would mean 2B and 2W.
To satisfy "a grey face", and assuming only three colors