Analyze the following statement, and then choose one of the options that you think is best to use in academic writing:The Malaria drug has been repeatedly promoted as a possible treatment, despite some medical experts’ caution about its alleged efficacy and side effects.

A、The Malaria drug has been repeatedly promoted as a treatment, even though a considerable number of medical professionals have questioned its efficacy.;
B、The Malaria drug has been repeatedly promoted as a possible treatment, despite some medical experts' saying that its efficacy is low, and its side effects are serious.;
C、There have been repeated promotions of the Malaria drug as a treatment, even though some medical experts warned against its use.;
D、The Malaria drug has been repeatedly promoted as a treatment, despite all medical experts warned of its low efficacy and its huge side effects.