Study the given diagram showing part of the solar system and answer the questions that follow.
1. Which of these planets are made up of rocks and iron?
2. Which of these planets are mainly made up of frozen gases?
(a)1- c, d, g, h 2- a, b, e, f
(b)1- c, f, e, g 2- a, b, d, h
(c)1- a, b, d, h 2- c, f, e, g
(d)1- a, b, e, f 2- c, d, g, h