I REALLY NEED HELP which of the following is written order directing a banker to a pay a specified amount of money to the payee
A. a bank statement
B. a cheque
C. a pay slip
D. an invoice​

Industrial engineers who specialize in ergonomics are concerned with designing workspace and devices operated by workers so as to achieve high productivity and comfort. a paper published in this research area reports on a study of preferred height for an experimental keyboard with large forearm-wrist support. a sample of 31 trained typists resulted in an average preferred height of 80.0 cm