Blocks P, Q and R have densities 0.95 g/cm3, 1.15 g/cm3 and 0.89 g/cm3 respectively. Which one of the following statements is correct when they are gently placed in pure water?
(a) P sinks, Q floats, R floats
(b) P sinks, Q sinks, R sinks
(c) P floats, Q sinks, R floats
(d) P floats, Q sinks, R sinks