Ascertain exact tense from reported speech

Question

Alphonse tells me:

“Scott said he had been studying Greek for five years.”

I am trying to imagine what Scott could actually have told Alphonse. I can come up with two situations:

a) Scott: “I studied Greek for 5 years.”

b) Scott: “I have been studying Greek for 5 years.”

Answer 1

a) means that Scott no longer studies Greek. b) means that Scott is still studying Greek.

If Alphonse told Scott that he had been studying, then b) is what he told Scott.