mcq

In Python 3, which of the following statements about dictionaries are correct:

They are an unordered collection of elements.

The elements are stored as key-value pairs.

They are indexed by keys.

The values can be of any type but the keys are immutable.

A

1, 2, and 3

B

1, 2, and 4

C

2, 3, and 4

D

All of these