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A mixture containing DNA fragments a, b,...

A mixture containing DNA fragments a, b, c and d with molecular weigths of `a+b=c,a gt b` and `d gt c`, was subjected to agarose gel electrophoresis. The positions of these fragments from cathode to anode sides of the gel would be

A

b,a,c,d

B

a,b,c,d

C

c,b,a,d

D

b,a,d,c

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A
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