The Hound of the Baskervilles:The fact that Barrymore accepted the telegram proved that he was?

Question

a.the man who had followed Sir Henery
b.in London
c.at Baskerville Hall
d.tryng to trick Holmes

Answer 1

Chapter 7: The Stapletons of Merripit House.

"It seemed hopeless to pursue the inquiry any farther, but it was clear that in spite of Holmes's ruse we had no proof that Barrymore had not been in London all the time."

Answer 2

Still alive when it was delivered.