Yes, some good points above.
FYI, as an additional note - for (B): the pace of people learning physics is about the same in New York and in London
can be improved to:
"the pace of people learning physics is about the same in New York as it is in London..."
FYI, as an additional note - for (B): the pace of people learning physics is about the same in New York and in London
can be improved to:
"the pace of people learning physics is about the same in New York as it is in London..."