Which Is False with Regards to Intra Oral Nerve Blocks

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