FERMAT 2001 Problem 21

A spiral of numbers is created, as shown, starting with 1. If the pattern of the spiral continues, in what configuration will the numbers 399,400 and 401 appear?

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Answer Choices
A. fermat 2001 21a
B.fermat 2001 21b
C. fermat 2001 21c
D. fermat 2001 21d
E. fermat 2001 21e