What is the sum of the arithmetic series below?

-105 + -100 + - 95 + - 90 + -85 + ... + - 5 + 0 + 5 + ... + 85 + 90 + 95 + 100 + 105

O A. O

O B. 1.050

O c. - 1,050

OD: 2,152,5

O E. 2100

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