The structural formulae for five compounds are shown below. 1 $\text{C}_4\text{H}_{10}$ 2 $\text{C}_2\text{H}_5\text{OH}$ 3 $\text{C}_4\text{H}_9\text{OH}$ 4 $\text{C}_4\text{H}_9\text{COOH}$ 5 $\text{C}_5\text{H}_{11}\text{OH}$ Which compounds belong to the same homologous series?
- A1, 3 and 4
- B2, 3 and 5
- C3 and 4 only
- D3 and 5 only