Fixed a bug introduced on the last one

src/components/Solutions/MultipleChoice.tsx

@@ -1,7 +1,6 @@
 /* eslint-disable @next/next/no-img-element */
 import {MultipleChoiceExercise, MultipleChoiceQuestion} from "@/interfaces/exam";
 import clsx from "clsx";
-import {isNaN} from "lodash";
 import {useEffect, useState} from "react";
 import {CommonProps} from ".";
 import Button from "../Low/Button";
@@ -28,7 +27,7 @@ function Question({
 
 	return (
 		<div className="flex flex-col items-center gap-4">
-			{isNaN(id) ? (
+			{isNaN(Number(id)) ? (
 				<span className="">{prompt}</span>
 			) : (
 				<span className="">