Which one of the following statements regarding the representation of an unsigned integer is FALSE?

a$.$ An unsigned integer can never be negative.

b$.$ An unsigned integer can only take positive values greater than $0.$

c$.$ Most computers define a constant called the max unsigned integer to determine the biggest integer that can be represented.

d$.$ A computer that uses $8$ bits to store an unsigned integer, will store $(10111)2$ as $00010111.$

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