Analyze the map below and answer the question that follows.
A map of European rivers. Rivers are labeled 1, 2, 3, 4, and 5. 1 is in the United Kingdom. 2 is in Spain. 3 is in Germany. 4 is in Italy along the Swiss border. 5 extends from Romania to Germany.
Image by Dbachmann

The river that is labeled with the number 1 on the map above is the River.
A.
Thames
B.
Tagus
C.
Rhine
D.
Po

Please select the best answer from the choices provided
A
B
C
D