The corresponding author should be the first author always.

The statement "The corresponding author should be the first author always" is false. The corresponding author is the person who is responsible for communication and correspondence regarding the research article. They may or may not be the first author. The first author is typically the person who has made the most significant contribution to the research and is often listed first in academic papers. However, the order of authors can vary depending on the field and the specific research project.