Which of the following italicized parts is a subject clause（主语从句)？A．The question is wh

Which of the following italicized parts is a subject clause(主语从句)？

A．The question is whether populations would put up with this.

B．The problem whether it is right or wrong has not yet been discussed.

C．It doesn"t matter whether the paper is thick or thin.

D．It depends on whether the manager will agree to the plan or not.

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