Given the following dimens.xml file, how would you define an ImageView with medium spacing at the bottom?

<?xml version=1.0 encoding=”utf-8″?>
<resources>
<dimen name=”spacing_medium”>8dp</dimen>
<dimen name=”spacing_large”>12dp</dimen>
</resources>

• <ImageView
  android:id=@+id/image_map_pin”
  android:layout_width=”wrap_content”
  android:layout_heignt=”wrap_content”
  android:src=@drawable/map_pin />
• android:id=@+id/image_map_pin”
  android:layout_width=”wrap_content”
  android:layout_heignt=”wrap_content”
  androi:layout_botttom=”@dimen/spacing_medium”
  android:src=@drawable/map_pin />
• <ImageView
  android:id=@+id/image_map_pin”
  android:layout_width=”wrap_content”
  android:layout_heignt=”wrap_content”
  android:layout_marginBottom=”@resources/spacing_medium”
  android:src=@drawable/map_pin />
• <ImageView
  android:id=@+id/image_map_pin”
  android:layout_width=”wrap_content”
  android:layout_heignt=”wrap_content”
  android:layout_marginBottom=”@dimen/spacing_medium”
  android:src=@drawable/map_pin />