If the total current of a battery string is 1,000 A and three battery strings are configured, the most economic cable configuration between the main switch box and the branch switch box is ():

If the total current of a battery string is 1,000 A and three battery strings are configured, the most economic cable configuration between the main switch box and the branch switch box is ():
A . 95 mm2 (328 A) x2
B . 120 mm2 (382 A) x 2
C . 150 mm2 (441 A) x 2
D . 185 mm2 (506 A) x 1

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Answer: A