请教: 大全-01-12

12.   Traveling the back roads of Hungary, in 1905 Béla Bartók and Zoltán Kodály began their pioneering work in ethnomusicology, and they were armed only with an Edison phonograph and insatiable curiosity.

(A) Traveling the back roads of Hungary, in 1905 Béla Bartók and Zoltán Kodály began their pioneering work in ethnomusicology, and they were armed only

(B) In 1905, Béla Bartók and Zoltán Kodály, traveling the back roads of Hungary, began their pioneering work in ethnomusicology, and they were only armed

(C) In 1905 Béla Bartók and Zoltán Kodály began their pioneering work in ethnomusicology, traveling the back roads of Hungary armed only

(D) Having traveled the back roads of Hungary, in 1905 Béla Bartók and Zoltán Kodály began their pioneering work in ethnomusicology; they were only armed（C）

(E) Béla Bartók and Zoltán Kodály, in 1905 began their pioneering work in ethnomusicology, traveling the back roads of Hungary, arming themselves only

The answer is C. But I don't understand why "armed", which modifies roads, in C is right.

And why A or D is wrong?

A。BB&ZK began and armed，armed前面的they多余

D。BB&ZK began ， they armed 两个句子中间没有连接词。run－on

谢谢! A我同意, 但D没有run-on, 当中不是有;(分号)吗?

C中armed到底修饰什么? 我觉得位置不对么.