A researcher is checking four proposed entries for an alkane containing 9 carbon atoms.
| Entry | Proposed molecular formula |
|---|---|
| A | C9H22\text{C}_9\text{H}_{22}C9H22 |
| B | C9H11\text{C}_9\text{H}_{11}C9H11 |
| C | C9H18\text{C}_9\text{H}_{18}C9H18 |
| D | C9H20\text{C}_9\text{H}_{20}C9H20 |
Which entry gives the correct molecular formula of the alkane?
Entry A
Entry C
Entry B
Entry D