What is the minimal form of the Karnaugh map shown below? Assume that X denotes a don’t care term.

(A) b\’d\’ (B) b\’d\’ + b\’c\’ (C) b\’d\’ + a\’b\’c\’d\’ (D) b\’d\’ + b\’c\’ + c\’d\’

Answer: (B)

Explanation: There are two prime implicants in the following K-Map- Prime Implicant higlighted in Green = Prime Implicant higlighted in Orange = So the Boolean expression is- Therefore option (B) is correct. This explanation is provided by Chirag Manwani.

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