Assertion (A): The position of each element in the list is considered as its index.

Reasoning (R): Indexing in a list can be positive and negative; index is defined using [] brackets.

1. Both A and R are true and R is the correct explanation of A.
2. Both A and R are true but R is not the correct explanation of A.
3. A is true but R is false.
4. A is false but R is true.

Assertion (A): sort() method sorts the objects of list in ascending order.

Reasoning (R): Defining sort() method with reverse=True as an argument sorts the list elements in descending order.

1. Both A and R are true and R is the correct explanation of A.
2. Both A and R are true but R is not the correct explanation of A.
3. A is true but R is false.
4. A is false but R is true.

Assertion (A): List is mutable data type.

Reasoning (R): In-place change is not possible in list elements.

1. Both A and R are true and R is the correct explanation of A.
2. Both A and R are true but R is not the correct explanation of A.
3. A is true but R is false.
4. A is false but R is true.

Assertion (A): List slices are the sub-part of a list extracted out.

Reasoning (R): In Python, Slice operator[:] is used to select a range of elements from a sequence.

1. Both A and R are true and R is the correct explanation of A.
2. Both A and R are true but R is not the correct explanation of A.
3. A is true but R is false.
4. A is false but R is true.