Which method added to class B at the marked spot will allow the code below to compile? Choose all possible solutions.
A. booloperator < (const B & v) const {return val<v.val;}
B. bool operator > (const B & v) const {return val<v.val;}
C. bool operator > (const B & v) const {return val>v.val;}
D. bool operator == (const B & v) const {return val==v.val;}
E. operator int () const {return val;}