Read the text and determine if the sentence is true:

However, witnesses said some of the black-clad gunmen who attacked a police station and government buildings in Baquba, 60 km (40 miles) northwest of Baghdad, proclaimed loyalty to Zarqawi and wore yellow headbands linking them to his group.

Sentence: The clothes they wore was an indication to their affiliationn
OPTIONS:
- Yes
- It's impossible to say
- No
Yes