下列哪一組昆蟲經歷的是「完全變態」（Complete metamorphosis），包含卵、幼蟲、蛹和成蟲四個階段？ Which of the following groups of insects undergoes complete metamorphosis, including egg, larva, pupa, and adult stages?
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蝴蝶和甲蟲的生命週期都有明顯的蛹期（Pupa），屬於完全變態（Holometabolous）