Which is the evidence to show that \[{{O}_{2}}\] released in photosynthesis comes from water?

• A. Isotopic \[{{O}_{2}}\] supplied as \[{{H}_{2}}O\] appears in the \[{{O}_{2}}\] released in photosynthesis.
• B. Isolated chloroplast in water releases \[{{O}_{2}}\] if supplied potassium ferricyanide or some other reducing agent.
• C. Photosynthetic bacteria use \[{{H}_{2}}S\] and \[C{{O}_{2}}\] to make carbohydrates.
• D. All of the above