Please solve the programming task below using a self-contained code snippet in a markdown code block.

Given a sorted integer array arr, two integers k and x, return the k closest integers to x in the array. The result should also be sorted in ascending order.
An integer a is closer to x than an integer b if:

|a - x| < |b - x|, or
|a - x| == |b - x| and a < b

 
Please complete the following python code precisely:
```python
class Solution:
    def findClosestElements(self, arr: List[int], k: int, x: int) -> List[int]:
```