Assertion (A): : Icebergs, which are a solid form of water, float on water in the seas. Reason (R1): Icebergs have two-thirds of their mass under water and the other third visible above the surface. Reason (R2): Icebergs are heavier than water and displace water of the seas, making them float.

• If only reason 1 (R1) and not reason 2 (R2) is the reason for the assertion (A).
• If only reason 2 (R2) and not reason 1 (R1) is the reason for the assertion (A).
• If both (R1) and (R2) are reasons for the assertion (A).
• If neither (R1) nor (R2) is the reason for the assertion (A).