The compounds below are identified as W, X, Y and Z: $\text{W: CH}_3\text{COCH}_2\text{CH}_2\text{OH}$ $\text{X: CH}_3\text{COCH}_2\text{CHO}$ $\text{Y: CH}_3\text{CH(OH)CH}_2\text{CH}_3$ $\text{Z: CH}_3\text{CH}_2\text{CH}_2\text{CHO}$ Which one or more of these compounds may be oxidised by acidified dichromate(VI) solution and also gives a positive result with Tollens’ reagent?
- AW and X only
- BW and Y only
- CX and Z only
- DY and Z only