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Of the many over-the-counter medications marketed for the relief of sinus headache, SineEase costs the least per dose. And SineEase is as effective per dose as the most effective of those other medications. So for relief from sinus headaches, SineEase is the best buy.
Which of the following, if true, most seriously weakens the argument above

A．Most of the over-the-counter medications marketed for the relief of sinus headache are equally effective per dose in providing such relief.

B．Many of the over-the-counter medications marketed for the relief of sinus headache contain the same active ingredient as SineEase.

C．People who suffer from frequent sinus headaches are ply advised to consult a doctor before taking any over-the-counter medication.

D．An over-the-counter medication that is marketed for the relief of symptoms of head cold is identical in composition to SineEase but costs less per dose.

E．(E) The per dose price for any given over-the-counter medication marketed for the relief of sinus headache is higher for smaller packages than it is for larger packages.

甲公司2015年1月1日借入一笔4年期借款300万元，该笔借款年利率为2%，到期一次还本付息。当日甲公司将借入的长期借款全部用于在建工程，2015年9月31日，该项在建工程完工达到预定可使用状态。假定不考虑其他因素，则影响甲公司2015年当期损益的金额为（）万元。

A.0.5

B.1.5

C.4.5

D.6