Sam, a TypeScript developer is working on creating a registration portal for his college event. He has created a user object as shown below. When he used it to write the logic for further processing, he found that there are redundant code.

Modify the given TypeScript code to remove the redundancy.

let userObj : {userName : string, uid : number | string}; 
function registerUser(user : {userName : string, uid : number | string}){ 
user.userName = userObj.userName; 
user.uid = userObj.uid; 
}

No modification required

let userObj : {userName : string, uid : number | string}; 
function registerUser(user : {userName : string, uid : number | string}){ 
user.userName = userObj.userName; 
user.uid = userObj.uid;
} //end of the option
type NumOrString = number | string; 
let userObj : {userName : string, uid : NumOrString}
function registeruser(user : NumOrString){
 user.username = userObj.username; 
user.uid = userObj.uid; 
} //end of the option
type NumOrString = number | string; 
type UserObj = {userName : string, uid : NumOrString};
let userObj : UserObj = {"Samuel", 231}; 
function registeruser(user : UserObj){
user.username = userObj.username; 
user.uid = userObj.uid;
 } //end of the option
Verified Answer
Correct Option - d

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