Southwest Asia became the center of an agricultural revolution. Which of the following is not a reason for this? A. It had fertile soil and abundant rainfall. B. Six types of large mammals gave hominids food, clothes, and transportation. C. Around 9000 BCE, humans began to domesticate barley and wheat. D. Frequent floods created a silt-like soil throughout the region. E. Planters selected and stored seeds for planting the following year.