Answer: Answer C and D
Equations:
A. 4+4+4+4 | 16 = 4 | 1+1+1+1
B. 4+4+4+4 | 16 = 1
C. 4+1+1 | 6 = 6 | 1+1+1+1+1+1
D. 4+4 | 8 = 8 | 1+1+1+1+1+1+1+1
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