निम्नलिखित कथन के लिए सबसे वैज्ञानिक रूप से सटीक कारण चुनिए: बर्फ पानी पर तैरती है क्योंकि:

Two statements are given below, labelled as Assertion (A) and Reason (R): Assertion (A): At room temperature, iron nails float in liquid mercury. Reason (R): Liquid mercury is less dense than iron at room temperature. Choose the correct answer from the options given below:

When we place ice on water it floats, but if we place a piece of solid wax in a container of liquid wax it sinks. This observation is best explained by which of the following statements? (A) Floating of ice on water is an anomalous behavior. (B) Sinking of solid wax is an anomalous behavior. (C) The density of ice is less than the density of liquid water. (D) The density of solid wax is less than the density of liquid wax.