What separates English as a lingua franca from the other lingua franca examples of Swahili, Indonesian, Russian, and Hindi?

A. English is diminishing in importance, while these other languages are ascending.
b. English is global in its use as a lingua franca, while these other languages serve this role regionally.
c. English is increasing in importance, while these other languages are diminishing.
d. English is the primary language of commerce, while these are the primary languages of diplomacy.
e. The other examples are essential to commerce, but English is the primary language of diplomacy.

b. English is global in its use as a lingua franca, while these other languages serve this role regionally.