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

You are given an array of positive integers price where price[i] denotes the price of the ith candy and a positive integer k.
The store sells baskets of k distinct candies. The tastiness of a candy basket is the smallest absolute difference of the prices of any two candies in the basket.
Return the maximum tastiness of a candy basket.
 
Please complete the following python code precisely:
```python
class Solution:
    def maximumTastiness(self, price: List[int], k: int) -> int:
```