General Chemistry
The oxide of element A is basic. The oxide of element B is amphoteric. The oxides of elements C and D are acidic.
The oxide of element A is basic. The oxides of elements B and D are amphoteric. The oxide of element C is acidic.
The oxide of element A is acidic. The oxide of element B is amphoteric. The oxides of elements C and D are basic.
The oxide of element A is acidic. The oxides of elements B and D are amphoteric. The oxide of element C is basic.