Are the following statements equivalent: a) ab> 0 and “a> 0, b> 0” b) ab> 0 and “the numbers a and b are of the same sign” c) ab> 0 and “a> 0, b> 0 or a< 0, b< 0” d) ab< 0 and “a> 0, b< 0” e) ab< 0 and “a< 0, b> 0 or a> 0, b< 0” f) ab< 0 and “the numbers a and b are of different signs” *brainliest to first correct answer* *cannot be this is a huge grade*