United States History

In the map above, the numbered dots correspond to cities. In
the eighth century, which cities were near the east-west limits of
the Islamic world?

(A) 1 and 7
(B) 1 and 9
(C) 2 and 6
(D) 2 and 8
(E) 5 and 7
Test ID: 1188
Source: The SAT Subject Tests Student Guide