How should the subject-verb agreement in this sentence be changed, if at all? Neither the bus nor the trains was running today.
A. was ran B. is run C. no change D. were running

Consider u = {x|x is a negative real number}which is an empty set? o {x|x eu and x has a negative cube root}o {x|x eu and x has a negative square root}{x|x eu and x is equal to the product of a positive number and -1}{x|x eu and x is equal to the sum of one negative and one positive number?