The path of `CO_(2)` in the dark reaction of photosynthetic was successfully traced by the use of the following or The dark reaction is traced by

Options

A. `O_(2)^(18)`
B. `C^(14)O_(2)`
C. `P^(36)`
D. `X-rays`

Answer

B

Explanation

Calvin traved the path in photosynthesis associated with dark reaction radioactive isotope of carbon `(C^(14))` is used, it is observed that `(C^(14)O_(2))` reduction of `CO_(2)` is definitely in dark reaction.