What will be output for the given code?

#include<bits/stdc++.h> 
using namespace std; 
string encrypter(string keyword) 
{ 
	string encoded = ""; 	
	bool arr[26] = {0}; 
	for (int i=0; i<keyword.size(); i++) 
	{ 
		if(keyword[i] >= 'A' && keyword[i] <= 'Z') 
		{ 		
			if (arr[keyword[i]-65] == 0) 
			{ 
				encoded += keyword[i]; 
				arr[keyword[i]-65] = 1; 
			} 
		} 
		else if (keyword[i] >= 'a' && keyword[i] <= 'z') 
		{ 
			if (arr[keyword[i]-97] == 0) 
			{ 
				encoded += keyword[i] - 32; 
				alpha[keyword[i]-97] = 1; 
			} 
		} 
	} 
	for (int i=0; i<26; i++) 
	{ 
		if(arr[i] == 0) 
		{ 
			arr[i]=1; 
			encoded += char(i + 65); 
		} 
	} 
	return encoded; 
} 
string ciphertxt(string msg, string encoded) 
{ 
	string cipher=""; 
	for (int i=0; i<msg.size(); i++) 
	{ 
		if (msg[i] >='a' && msg[i] <='z') 
		{ 
			int pos = msg[i] - 97; 
			cipher += encoded[pos]; 
		} 
		else if (msg[i] >='A' && msg[i] <='Z') 
		{ 
			int pos = msg[i] - 65; 
			cipher += encoded[pos]; 
		} 
		else
		{ 
			cipher += msg[i]; 
		} 
	} 
	return cipher; 
} 
int main() 
{ 
	string keyword; 
	keyword = "cipher"; 	
	string encoded = encrypter(keyword); 
	string message = "hello"; 
	cout  << ciphertxt(message,encoded) << endl; 
	return 0; 
}

A. bejjm

B. LFPDAR

C. BEJJM

D. lfpdar

Answer: Option C