Trying to get array settings

php array

function get_editable_roles() {
		global $wp_roles;
	
		$all_roles = $wp_roles->roles;
		$editable_roles = apply_filters( 'editable_roles', $all_roles );
		$options = array();
	
		foreach ( $editable_roles as $roles ) {
			foreach( $roles as $role ) {
				$options[] = array( $role => $role );
			}
		}
		return $options;
	}

right now the above returns 

    Array
(
    [0] => Array
        (
            [Administrator] => Administrator
        )

    [1] => Array
        (
        )

    [2] => Array
        (
            [Editor] => Editor
        )

    [3] => Array
        (
        )

    [4] => Array
        (
            [Author] => Author
        )

    [5] => Array
        (
        )

    [6] => Array
        (
            [Contributor] => Contributor
        )

    [7] => Array
        (
        )

    [8] => Array
        (
            [Subscriber] => Subscriber
        )

    [9] => Array
        (
        )

)


Where I am looking for just the top level array():

    Array
(
        [Administrator] => Administrator
        [Editor] => Editor
        [Author] => Author
        [Contributor] => Contributor
        [Subscriber] => Subscriber

)

I tried: 

    function get_editable_roles() {
		global $wp_roles;
	
		$all_roles = $wp_roles->roles;
		$editable_roles = apply_filters( 'editable_roles', $all_roles );
		$options = array();
	
		foreach ( $editable_roles as $role => $name ) {
			$options = array( $role => $name );
		}
		return $options;
	}

but that just returned the last role (in the proper format) and one only..

Thought?