The correct answer is B. One carries warm water and another carries cold water.
The Brazil Current and the Gulf Stream are both ocean currents that transport water in different parts of the world. The Brazil Current flows along the eastern coast of South America in the South Atlantic Ocean, while the Gulf Stream flows along the eastern coast of North America in the North Atlantic Ocean.
The Brazil Current carries warm water from the tropics towards the higher latitudes, while the Gulf Stream carries warm water from the Gulf of Mexico towards the North Atlantic. In contrast, the Brazil Current carries warm water and the Gulf Stream carries cold water.
Therefore, option B is the correct answer as it accurately describes the difference between the Brazil Current and the Gulf Stream.