Given here are four sentences. The first sentence is in the correct order, while the rest of the sentences are jumbled. Pick the option that gives the correct order.

A. Stretching about 30 miles (50 km) along the banks of the Volga River, Stalingrad was a large industrial city 

B. Capturing the city would cut Soviet transport links with southern Russia, and Stalingrad would then serve to anchor

C. the northern flank of the larger German drive into the oil fields of the Caucasus.

D. producing armaments and tractors and was an important prize in itself for the invading German army.