Pick out wrong combination

Options

A. `Fe^(+2) to ` Haemoglobin
B. `Mg^(2+) to ` Photosynthesis
C. `Se^(2+) to ` Kreb Cycle
D. `Co^(2+) to ` Vitamin B-12

Answer

C

Explanation

Krebs cycle is citric acid cycle or tricarboxylic acid cycle which does not involve `Se^(2+)`