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ABCD is a square, EFGH is another square...

ABCD is a square, EFGH is another square. AE = FB = GC = HD = a and AH = DG = CF = BE = b, then the ratio of the perimeters of ABCD to EFGH is

A

`a:b`

B

`(a+b) : (a-b)`

C

`(a+b) : sqrt(a^(2) + b^(2))`

D

`2a^(2) : b^(2)`

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The correct Answer is:
C
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