Several of these, recently, have concerned genetically modified (GM, 转基因) foods. Although some experts tell us that these foods will do us no harm and that the concern about them is just speculative, other experts say that GM food is potentially very damaging to health. At the very best, the jury is still out on the matter.In many countries, products which have been genetically modified are supposed to show this information on their labels but no _______ large food producer does so.What does the author mean by "the jury is still out on the matter" (Para. 2)?A The matter is still uncertainB The matter needs a jury to judgeC The jury to judge is not availableD The matter is not important.

Several of these, recently, have concerned genetically modified (GM, 转基因) foods. Although some experts tell us that these foods will do us no harm and that the concern about them is just speculative, other experts say that GM food is potentially very damaging to health. At the very best, the jury is still out on the matter. In many countries, products which have been genetically modified are supposed to show this information on their labels but no _______ large food producer does so. What does the author mean by "the jury is still out on the matter" (Para. 2)? A The matter is still uncertain B The matter needs a jury to judge C The jury to judge is not available D The matter is not important.