Country X's population was approximately 1.2 billion (or 1,200 million). That same year, Country Y's population was approximately 900 million. With which of the following real GDP would Country X's standard of living have been considered higher than Country Y's that year?

1 Country X's real GDP = 900 billion; Country Y's real GDP = 500 billion

2 Country X's real GDP = 24 trillion; Country Y's real GDP = 19 trillion

3 Country X's real GDP = 18 trillion; Country Y's real GDP = 14 trillion

4 Country X's real GDP = 12 trillion; Country Y's real GDP = 10 trillion