Correct idiom is Range from X toY.
(A) to the shortage of regulations to protect investors and a serious lack of information about investments in others
(B) to the shortage of regulations to protect investors andin others a serious lack of information about investments--> X in some countries and Y in some countries makes it ||
(C)and the shortage of regulations to protect investors and a serious lack of information about investments in others--> Wrong Idiom.
(D)and the shortage
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(A) to the shortage of regulations to protect investors and a serious lack of information about investments in others
(B) to the shortage of regulations to protect investors andin others a serious lack of information about investments--> X in some countries and Y in some countries makes it ||
(C)and the shortage of regulations to protect investors and a serious lack of information about investments in others--> Wrong Idiom.
(D)and the shortage
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