Given the effects of various cellular processes and environmental conditions on plant physiology, consider the following statements regarding how they can influence the Respiratory Quotient (RQ) in plants:

A. In conditions of high light intensity leading to increased photosynthesis, the RQ may temporarily drop below the typical range as oxygen is produced more than it is consumed.

B. The transition from light to dark conditions, where photosynthesis ceases but respiration continues, can lead to a transient increase in the RQ value as the consumption of oxygen outpaces carbon dioxide production.

C. During active nitrogen fixation by root nodules in leguminous plants, the RQ can be expected to decrease, considering the high energy and oxygen demand for the fixation process, which does not directly produce carbon dioxide.

D. Waterlogged roots experiencing hypoxic or anoxic conditions shift to anaerobic respiration or fermentation, leading to an RQ greater than 1 due to the production of carbon dioxide without the consumption of oxygen.

Which one of the following combinations of the above statements is correct regarding their impact on the Respiratory Quotient (RQ) in plants?