12. Wedding events are not mandatory because couples can simply marry at the district offices. Based on the observation, wedding events are
(A) a luxury good and their income elasticity of demand is greater than 1
(B) a luxury good and their income elasticity of demand is less than 1
(C) a necessity good and their income elasticity of demand is greater than 1
(D) a necessity good and their income elasticity of demand is less than 1

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