Analize the following statements about the use of Karnaugh maps to obtain logical functions from truth tables:

• I- The combination of cells that is selected must include all cells at least once. A cell can only be selected once.
• II- The selected cells must form a rectangular shape, with a size that is a power of 2.
• III- The selected cells must be adjacent to each other, either horizontally or vertically.
• IV- The resulting logical function must be simplified as much as possible, using the laws of Boolean algebra.
• V- Karnaugh maps can only be used for up to 4 input variables.