Set A is arranged in ascending order of the values.

QTY A: Mean of set A

QTY B: Median of set B

Correct ans: A

My solution:

taking an example set: {1,7,8,9}

here mean=5, median=7.5

This clearly contradicts the answer. Is this possibly a wrong answer?

Given Solution:

Am I not getting the question or the way of visualising the problem is incorrect?