Which sequence of steps is the most suitable way to carry out the emulsion test for lipids?
- AAdd $2\,\text{cm}^3$ of water to the sample. Pour the water into a test-tube containing $2\,\text{cm}^3$ of ethanol. Lipids are present if the mixture becomes cloudy.
- BAdd $2\,\text{cm}^3$ of ethanol to the sample and shake. Pour the ethanol into a test-tube containing $2\,\text{cm}^3$ of water and boil. Lipids are present if the mixture becomes clear.
- CAdd $2\,\text{cm}^3$ of water to the sample and shake. Pour the water into a test-tube containing $2\,\text{cm}^3$ of ethanol and boil. Lipids are present if the mixture becomes cloudy.
- DAdd $2\,\text{cm}^3$ of ethanol to the sample and shake. Pour the ethanol into a test-tube containing $2\,\text{cm}^3$ of water and shake again. Lipids are present if the mixture becomes cloudy.