Pressing the E and I keys

Correct! As you answered:

• The E key is pressed with the left middle finger, the same finger that presses D
• The I key is pressed with the right middle finger, the same finger that presses K

Below you have an image to visualize it better:

To press these keys move your middle finger from the home row up to E or I as needed, then return it to D or K respectively.

Time to practice! Remember: the important thing is pressing the keys correctly.