A deficiency in which vitamin causes beriberi, digestive problems, muscle weakness, nervous disorders, and heart failure? 

1.23 x 2.34 = ________ (rounded to the nearest thousandth)

A) 2.878 B) 2.8782 C) 2.87819 D) 2.88

Which of the following medications, if taken in the last 24 hours, would be a contraindication to administering nitroglycerin?

a. Coumadin b. Aspirin c. Viagra d. Tylenol