A cuboid whose length is 6 cm. width 4 cm. and height 1 cm. Is. Two faces measuring 4 cm. x 1 cm. It is painted black. Two faces measuring 6 cm. x 1 cm. is painted red and is 6 cm. x 4 cm. The two faces are painted green. This cuboid is divided by 1 cm. x1 cm. x1 cm. is cut into cubes, then if the faces containing black and green are removed, then how many cubes will remain -

• A. 8
• B. 4
• C. 16
• D. 12