' A + B' means 'A is the son of B', 'A - B' means 'A is the daughter of B',
A × B' means 'A is the mother of B', 'A ÷ B' means 'A is the brother of B'. Which of the following equations indicates that G is the son of D?
1
F + G × E ÷ D - C
2
F + G ÷ E × D - C
3
G + F × E - D ÷ C
4
G × F + E ÷ D - C