With regards to local anesthesia of the oral region which is incorrect?

• A. to anaesthasise the chin and lower lip a mental nerve block or an inferior alveolar nerve block can be done
• B. an intra oral mental nerve block is done where the lip meets the gum at the level of the first pre molar
• C. an external mental nerve block can be done in the same region
• D. local anaesthetic with adrenaline should not be used
• E. a midline laceration may need a bilateral block