how to make find() function of STL map container case sensitive?

I had interviewed with a MNC company. He gave me the following code and asked me to make find() function as case sensitive. I tried but failed to understand how to make inbuilt find function as case sensitive. Is there any way to make it case sensitive to find only particular key value?

#include <iostream>
#include <map>

using namespace std;

int main()
{
    map<string, int> mp;
    
    mp["Test"] = 1;
    mp["test"] = 2;
    mp["TEST"] = 3;
    mp["tesT"] = 4;
    
    
    for(auto it = mp.find("TEST"); it != mp.end(); it++)
    {
       cout<<it->first<<" "<<it->second<<endl;
    }
 
    return 0;
}

Output :

TEST 3
Test 1
tesT 4
test 2

But I expect output only:

TEST 3

Thanks in advance.