4. Which of the following expressions has a sum-of-products form? (x+y+z)(x+y+z)zxyz+xyz+xyz(x+y+z)(x+y+z) 5. Which of the following expressions is a sum-of-products form of the Boolean expression: F(x,y,z)=(x+y)z?F(x,y,z)=xyz+xyz+xyzF(x,y,z)=xyz+xyz+xyzF(x,y,z)=xyz+xyz+xyz