Concerning the Broad Stages of Human Geography, which of the following statements are true?
A) The Quantitative Revolution occurred between the late 1950s and 1960s.
B) Areal differentiation focuses on identifying the uniqueness of each region.
C) The early colonial period emphasized regional analysis of physical, cultural, and economic characteristics.
D) Post-modernism in the 1990s shifted focus to context-specific geography.

Choose the correct answer: