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Which of the following is correct implementation code for the compareto method in the expertplayer class?

i.
expertplayer rhs = (expertplayer) obj;
if(myrating == rhs. myrating) return 0;
else if (myrating < rhs. myrating) return –1;
else return 1;

ii.
expertplayer rhs = (expertplayer) obj;
return myrating – rhs. myrating;

iii.
expertplayer rhs = (expertplayer) obj;
if((rhs. return 0;
else if ((rhs. < 0) return –1;
else return 1;

a. i only
b. ii only
c. iii only
d. i and ii only
e. i, ii, and iii

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