The membranous labyrinth is surrounded by a fluid called

The membranous labyrinth is enclosed in the:

$P$ is a continuous tubular structure. Inside these tubes, $Q$ is arranged.
$\quad\quad\quad P \quad\quad\quad Q$
$(A)$ $Scala \text{ vestibuli} \quad$ $Scala \text{ media}$
$(B)$ $Scala \text{ media} \quad$ $Scala \text{ tympani}$
$(C)$ $Scala \text{ tympani} \quad$ $Scala \text{ media}$
$(D)$ $Scala \text{ media} \quad$ $Scala \text{ vestibuli}$

The ear ossicles in the middle ear, from outside to inside, are:

The bone that is in contact with the oval window is:

Identify the correct sequence of ear ossicles from the outer ear to the inner ear.