Flow rate refers to the amount (volume or mass) of fluid (liquid or gas) passing through a specific surface per unit time. When the amount of fluid is expressed as a volume, it is called volume flow; when the amount of fluid is expressed as a mass, it is called mass flow. Based on the above definitions, Which of the following options contain descriptions of the volume flow:. ["The A Amazon River meanders 6,440 kilometers, with a basin area of 6.915 million square kilometers. The annual flow of water into the Atlantic Ocean accounts for one-sixth of the world's rivers.", "apan's warm current is in the open sea to the east of Taiwan Island. Its width is about 100 ~ 200 kilometers and the depth is 200 meters. The maximum velocity can reach 60 ~ 90 kilometers every day and night.", 'ctoria Falls is located on the border of Zambia and Zimbabwe in Africa. When the Zambezi River is full, there will be 7,500 cubic meters of water per second.', "aspian Sea is located at the junction of Eurasia inland and is the world's largest saltwater lake. It has 130 rivers into the sea, so the water storage capacity has reached 76,000 square kilometers."]