Jaylen noticed that the moon is completely dark one night. His brother does not understand how lunar eclipses like this happen. Jaylen explains first about the positioning of the Earth, moon and sun. Which of the following is an accurate explanation of this positioning? aThe Earth and moon are in the straight line, while the sun is below Earth. bThe Earth, moon, and sun need to be in a straight line. cThe Earth and sun are in a straight line, while the moon is below earth. dThe moon and sun need to be in a straight line, while Earth is below the sun.