This code is only showing me the name of the clients of my database but I need that when selecting it I also bring the NIT
<?php
$conexion = mysqli_connect("localhost", "root","admin123","database");
$sentencia = "SELECT * FROM cliente ";
$query = mysqli_query($conexion,$sentencia);
?>
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>Editar Cliente</title>
<link rel="stylesheet" type="text/css" href="estilos.css">
</head>
<body>
<center>
<table width="280" cellspacing="1" cellpadding="3" border="0" bgcolor="#1E679A">
<h1>Editar Cliente</h1>
<form action="editarCliente_submit" method="get" accept-charset="utf-8">
</form>
<br> <label>Nombre Del Cliente : </label>
<select name="Clientes">
<?php while ($arreglo = mysqli_fetch_array($query)) { ?>
<option value="<?php echo $arreglo['NIT']?>"><?php echo $arreglo ['nombre_Cliente']?></option>
<?php } ?>
option
</select></br>
<br> <label>NIT : </label>
<input type="text" name="user" placeholder=" " required size="30" maxlength="30" style="margin-left: 8%" /><br/>
<br> <label style="margin-left: -10%"> ¿Se realizan RIPS? </label>
<input type="text" name="user" placeholder="" required size="10" maxlength="15" style="margin-left: 3%" /><br/>
<br><input type="submit" name="Modificar_Cliente" value ="Modificar" onclick="location='http://localhost/Aeroasistencia/Administracion/modificarCliente.php'" style="margin-right: 3%">
<input type="submit" name="Nuevo_Cliente" value ="Nuevo" onclick="location='http://localhost/Aeroasistencia/Administracion/nuevoCliente.php'">
<input type="submit" name="Eliminar_Cliente" value ="Eliminar" onclick="location='http://localhost/Aeroasistencia/Administracion/eliminarCliente.php'" style="margin-left: 3%">
<input type="submit" value="Volver" onclick="location='http://localhost/Aeroasistencia/Administracion/administracion.php'" style="margin-left: 3%" />
</table>
</center>
</body>
</html>