The characteristics of four elements, P, Q, R and S, are given below. Solid P reacts with dilute hydrochloric acid and releases hydrogen. Solid Q is an electrical insulator. Solid R is used in saucepan production because it is a good heat conductor. Solid S reacts with oxygen to make a compound in which atoms of S share electrons with atoms of oxygen. Which of these elements are metals?
- AP and R
- BP and S
- CQ and R
- DQ and S