Individuals can now use the Internet to buy and sell I. stocks. II. bonds. III. mutual funds. IV. stock options

The printer ran out of preprinted sales invoice forms and several sales invoices were not printed. The best internal control to detect this error is

a. a batch total of sales invoices to be prepared compared to the actual number of sales invoices prepared b. sequentially numbered sales invoices c. visual verification that all sales invoices were prepared d. none of the above will detect this error

Which of the following is not one of the problems that accounts for most systems failures?

a. poorly specified systems requirements b. ineffective development techniques c. lack of user involvement in systems development d. insufficient dollar investment in the new system