If you take two steps of different sizes, (a) can you end up at your starting point? More generally, (b) can two vectors with different magnitudes ever add to zero? (c) Can three or more?
A. (a) Yes, (b) No, (c) Yes
B. (a) No, (b) No, (c) Yes
C. (a) No, (b) Yes, (c) Yes
Answer: B. (a) No, (b) No, (c) Yes
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Fill in the blank(s) with the appropriate word(s).