When an electrochemical cell is constructed, the voltmeter reads a negative number. Select the true statement(s)  A. The electrode hooked up to the negative lead is the cathode.  B. The electrode hooked up to the positive lead is the cathode.  C. The electrode hooked up to the negative lead is the anode.  D. No reaction occurs because it is not spontaneous as constructed.  E. B and C

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