Which is false with regards to intra oral nerve blocks?

• A. the technique is similar to that for a lingual nerve block
• B. and inferior alveolar nerve block will anaesthatise the chin and lower lip
• C. a lingual nerve block will anaesthatise the anterior two thirds of the tongue plus the floor of the mouth and the gums
• D. in such block the needle is inserted two cm along the lateral border of the ramus of the mandible
• E. the site of needle insertion is 1 cm above the third molar