The earliest Acheulean tools associated with H. erectus come from the Kokiselei site near Lake Turkana in Kenya. What are the characteristics of these tools? Group of answer choices

A. a high degree of variance in shape, indicating styles were not uniform

B. a low degree of functional differentiation symmetry, uniformity, and planning

C. symbolic etchings that indicate ritual behavior

D. less sophistication than Oldowan tools