Which of the following abbreviations means "four times a day"?

A construction worker was accidentally shot with a nail gun. The nail penetrated the skull approximately ½ inch through the temporal region. Before your arrival, coworkers pulled the nail free. Based on the mechanism of injury, which sign provides the strongest evidence that the meningeal layers have been broken?

A) Blood draining from the puncture wound B) Crepitus of the skull at the injury site C) Deformity and depression at the injury site D) Cerebrospinal fluid oozing from the puncture wound

Which is the correct term for the upper number in a fraction?

A) Numerator B) Denominator C) Quotient D) Mean