Determining the output when accessing a list slice

There is a Python code fragment that outputs a part of a list. The list letters contains the elements ['a', 'b', 'c', 'd']. It is required to find out what the output will be when executing the following code.

Code:

letters = ['a', 'b', 'c', 'd']
print(letters[5:])

Answer options:

• c
• b
• d
• an error will occur
• []
• a