5. A wooden block with a density of 0.6 g/cm³ floats on water (density of water = 1.0 g/cm³). What percentage of the block's total volume is submerged?
(A) 40%
(B) 50%
(C) 60%
(D) 100%

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統計： A(1), B(0), C(2), D(0), E(0) #3840115