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According to Collier and Gunning (1999), sub-Saharan Africa grew slowly from the mid-1970s due to O A. A lack of natural resources. O B. Colonialism. O C. Insufficient foreign aid. O D. Autocracy. Reset Selection Mark for Review What's This? Question 58 of 76 1 Points The Solow model differs from the Harrod-Domar growth model because: A. The capital/output ratio is fixed. OB. It does not require capital accumulation for output to increase. O c. Output per worker declines as the capital/labour ratio increases. O D. It explains why changes in technology take place to determine growth