Read the following paragraph and determine if the hypothesis is true:

FRANKFURT (Reuters) - Swedish carmaker Volvo is preparing a hardware retrofit for some of its older diesel cars in Germany, according to a report by Der Spiegel magazine published on Monday. Volvo is working on the retrofit with catalyst producer Dr. Pley, which is based in Bamberg, Germany, it added.

Available choices:
 -Yes.
 -It's impossible to say.
 -No.
Hypothesis: Volvo is preparing a hardware retrofit for its older diesel models which will only be available in Germany. 



It's impossible to say