Raising of E-way bill

1) Suppose A sales goods to B and further B sales same goods to C. A generates tax invoice to B with shipping/delivery address of C's location (Subsequently, B also raises his tax invoice to C). A also generates e-way bill and arrange to deliver goods directly at the address of C.
Query - whether B is also required to generate e-way bill in this transaction?

2) Suppose A sales goods to B and further B sales same goods to C. A generates tax invoice to B and B to C. C arrange for collection of goods from A's location.
Query - Who is supposed to generate e-way bill? If C can raise e-way bill for collecting goods from A with seller details of B?