Question

A bee of mass 0.000087 kg sits on flower of mass 0.0123 kg. what is the total mass supported by the stem of the flower up to appropriate significant figures? a) 0.012387kg b) 0.01239 kg C) 0.0124 kg D) 0.012 kg

according to me the answer should be C) but in my book the answer is D)
so please help

Answer 1

So total mass will be :

0.000087 + 0.0123 = (a) 0.012387