3. Suppose that some of the vectors V1, ..., Vn are assigned to specific groups. For example, we might insist that V13 is assigned to group 3. Suggest a simple modific- ation of the k-means algorithm that respects this requirement. 3. Suppose that some of the vectors V1, ..., Vn are assigned to specific groups. For example, we might insist that V13 is assigned to group 3. Suggest a simple modific- ation of the k-means algorithm that respects this requirement