The correct options are
A Eratosthenes
B Ptolemy
In the Greek civilisation, many cartographers developed maps of the world. Eratosthenes was a Greek who created his version of the world map in 220 BCE. Ptolemy was another Greek cartographer who created a new world map around 150 CE. This map of the world was more detailed. It included all the explored regions of the world by the Greeks. The surrounding areas were accurate, but still, not every land on Earth was depicted accurately on this map.