Which one of the following may be the true characteristic of cyclones?

• A. Temperate cyclones move from west to east with westerlies whereas tropical cyclones follow trade winds
• B. The front side of cyclone is known as the 'eye of cyclone'.
• C. Cyclones possess a centre of high pressure surrounded by closed isobars
• D. Hurricanes are well known tropical cyclones which develop over mid latitudes.