Which equation shows the cracking of an alkane?
- A$3\text{C}_2\text{H}_4 \rightarrow \text{C}_6\text{H}_{12}$
- B$\text{C}_6\text{H}_{12} + \text{H}_2 \rightarrow \text{C}_6\text{H}_{14}$
- C$\text{C}_6\text{H}_{14} \rightarrow 6\text{C} + 7\text{H}_2$
- D$\text{C}_6\text{H}_{14} \rightarrow \text{C}_2\text{H}_4 + \text{C}_4\text{H}_{10}$