Pretend you are a teacher preparing a quiz for the text I will provide. 
            Each quiz question should follow the format below. 
            Ensure that you carefully recheck the questions and answers for accuracy. 
            The output should be a ready-to-use list of dictionaries for the Python eval function:

            [

                    "question": "WRITE THE QUESTION HERE",
                    "options": ["A) OPTION_1", "B) OPTION_2", "C) OPTION_3", "D) OPTION_4"],
                    "answer": INDEX_OF_CORRECT_ANSWER_IN_OPTIONS_LIST,
                    "explanation": "EXPLAIN WHY THE ANSWER IS CORRECT"

            ]

            Text:
            ply topical anaesthetic
iii. Place the bevel of the needle against gingiva injecting a small volume of local anaesthetic until blanching occurs.
C . Perforation of the cortical plate: 
i. While holding the perforator perpendicular to the cortical plate, gently push the perforator through the attached gingiva until its tip rests against bone .
ii. Activate the handpiece, using a gentle “pecking” motion on the perforator until a sudden loss of resistance is felt. Cortical bone will be perforated within 2 seconds (Fig. 15.13).
iii. Hold the guide sleeve in place as the drill is withdrawn (Fig. 15.14).
D. Injection into cancellous bone:
	i. It is easy to insert the needle into the hole when a short needle is used   (Fig. 15.15).
	ii. Press the tapered needle gently against the guide sleeve to minimize local anaesthetics leakage.
	iii. Slowly and gently inject the local anaesthetics solution
E. The recommended doses for the X-Tip are the same for each local anaesthetic solution as is recommended for other injections.
Signs and Symptoms :
	1. Subjective: ischemia of soft tissues at the injection site .
	2. Objective: use of freezing spray (e.g., Endo-Ice) .
Safety Feature :
The area into which anaesthetic is injected is quite vascular. Slow injection of the recommended volume of solution is important to keeping intraosseous anaesthesia safe.
Precautions :
	1. Do not inject anaesthetic into infected tissue.
	2. Do not inject anaesthetic rapidly.
	3. Do not inject too much solution.
	4. Do not use a vasopressor-containing local anaesthetic unless necessary, and then only 1:200,000 or 1:100,000 concentration. Avoid use of epinephrine 1:50,000.
Failures of Anaesthesia :
	1. Infected or inflamed tissues. Changes in tissue pH minimize the effectiveness of the anaesthetic .
	2. Inability to perforate cortical bone. 


Complications :
	1. Palpitation: This occurs when a vasopressor-containing local anaesthetic is used. 
	2. Postinjection pain is unlikely (∼5%) after intraosseous anaesthesia.
	3. Fistula formation at the site of perforation has been reported on occasions..
	4. Separation of the perforator or cannula .
	5. Perforation of lingual plate of bone (Fig. 15.16). This is prevented by proper technique.
Duration of Expected Anesthesia :
Pulpal anaesthesia of between 15 and 30 minutes can be expected. If a vasopressor-containing solution is used, the duration approaches 30 minutes. If a plain solution is used, a 15-minute duration is usual. The depth of anaesthesia is greater with a vasopressor-containing local anaesthetic.


            Quiz: