Which of the following will give unsymmetrical di-substituted urea after reaction with `CH_(3)NH_(2)`?

Which of the following will give unsymmetrical di-substituted urea after reaction with `CH_(3)NH_(2)`?
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Which of the following will give unsymmetrical di-substituted urea after reaction with `CH_(3)NH_(2)`? A. ` ... `CH_(3)CH_(2)NCO` D. all of these
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