请分析讲解下此题目---**Question Stem:** 如图, 一只母鸡漂浮在水槽中, 突然下了一个蛋, 鸡蛋沉底后水槽液面将 ( ) **Chart/Diagram Description:** Type: Illustrative diagrams. Main Elements: Two rectangular containers are shown side by side, representing a tank. Both containers contain liquid, indicated by horizontal lines. In the left container (labeled with option A below it), a cartoon chicken is shown floating on the liquid surface, partially submerged. The liquid level is shown. In the right container (labeled with option B below it), the same cartoon chicken is shown floating on the liquid surface, partially submerged. An oval shape representing an egg is shown resting at the bottom of the container, below the liquid surface. The liquid level in the right container is shown lower than the liquid level in the left container. **Options:** A. 上升 B. 不变 C. 下降 D. 无法判断 **Other Relevant Text:** 小红书号: 1559390766