Which of the following cannot be the lengths of sides of a triangle ABC?
AB = 2.3 cm ; BC = 3.8 cm ; CA = 5.5 cm
AB = 3 cm ; BC = 5 cm ; CA = 7 cm
AB = 3.5 cm ; BC = 4.7 cm ; CA = 7.6 cm
AB = 2 cm ; BC = 4 cm ; CA = 6 cm
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