Which of the following statements describes specialization and generalization?

a$.$ Specialization is the top$-$down process of identifying lower$-$level, more specific entity supertypes from a higher$-$level en subtype, Generalization is the bottom$-$up process of identifying a higher$-$level, more generic entity supertype from lowerentity subtypes.

b$.$ Specialization is the top$-$down process of identifying lower$-$level, more specific entity subtypes from a higher$-$level entir supertype. Generalization is the bottom$-$up process of identifying a higher$-$level, more generic entity supertype from low: level entity subtypes.

c$.$ Specialization is the top$-$down process of identifying lower$-$level, more specific entity supertypes from a higher$-$level en subtype. Generalization is the bottom$-$up process of identifying a higher$-$level, more generic entity subtype from lower$-$le entity supertypes.

d$.$ Specialization is the top$-$down process of identifying lower$-$level, more specific entity subtypes from a higher$-$level enti subtype. Generalization is the bottom$-$up process of identifying a higher$-$level, more generic entity subtype from lower$-$le entity supertypes.

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JAN

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