Four stages in the lifecycle of a high-mass star are shown in the table below:
| Stage | Description |
|---|---|
| W | The star explodes in a supernova. |
| X | Dust and gas are pulled together by gravity. |
| Y | Hydrogen fusion begins in the core. |
| Z | The star expands to form a red supergiant. |
What is the correct chronological order of these stages?
X→Y→Z→WX \rightarrow Y \rightarrow Z \rightarrow WX→Y→Z→W
Y→X→Z→WY \rightarrow X \rightarrow Z \rightarrow WY→X→Z→W
X→Z→Y→WX \rightarrow Z \rightarrow Y \rightarrow WX→Z→Y→W
Y→Z→X→WY \rightarrow Z \rightarrow X \rightarrow WY→Z→X→W