patients with pyruvate dehydrogenase deficiency show high levels of lactic acid in the blood. however, in some cases, treatment with dichloroacetate (dca) lowers lactic acid levels. dca targets the activity of pyruvate dehydrogenase kinase (pdk). Identify how DCA acts to stimulate pyruvate dehydrogenase activity: a. DCA activates pyruvate dehydrogenase phosphatase b. DCA increases phosphorylotion levels of pyruvate dehydrogenase c. DCA inhibits pyruvate dehydrogenase kinase d. DCA activates pyruvate dehydrogenase kinase