Batteries 'A' and 'B' shown in the illustration are 6 volts each and batteries 'C' and 'D' are 24 volts each. If 'A' and 'B' were reconnected to be in series-opposing to 'C' and 'D' respectively, the result would be _______________. EL-0039 A. 18 volts, negative at the top terminal B. 18 volts, positive at the top terminal C. 30 volts, negative at the bottom terminal D. 30 volts, positive at the bottom terminal