**Category:** Organic Chemistry  
**Subtype:** Chemical Compounds  
**Problem Description:** Identify the correct chemical formula for ethylene, which is a plant hormone produced from ripe fruits.  

**Options to choose from:**  
A. \(\mathrm{C}_{2} \mathrm{H}_{2}\)  
B. \(\mathrm{CH}_{4}\)  
C. \(\mathrm{C}_{2} \mathrm{H}_{4}\)  
D. \(\mathrm{C}_{2} \mathrm{H}_{6}\)