Determine the values of A, B, C, D that make the product

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Determine the values of A, B, C, D that make the product term – AB– CD equal to 1—

1. A = 0, B = 1, C = 0, D = 1
2. A = 0, B = 1, C = 1, D = 1
3. A = 1, B = 1, C = 1, D = 0
4. A = 1, B = 0, C = 0, D = 0

Correct Option: A

AB CD = 0·1·0·1
= 1·1·1·1
= 1
A = 0, B = 1, C = 0, D = 1.