[F C E]

2nd and 10 from A's 30 yard line. Ineligible A71 [a] goes 5 yards beyond the

line of scrimmage on play in which a legal forward pass crosses the line of

scrimmage: [b] A88, who is covered up by A90, catches a legal forward pass

at B's 30 yard line; [c] ineligible A65, who is 10 yards beyond the line of

scrimmage is hit in the back by a pass which then falls incomplete; or[d]

ineligible A50, 10 yards downfield' is hit in the back by a legal pass which is

then caught by A80 and run for a touchdown.

What are B's penality options and from where will the penalties be enforced in

each of these situations.