Where does blood collected by the thebesian veins empty?

Which of the following best illustrates the commutative property of addition?

A) 5 + 3 + 2 = 10 B) 5 + (3 + 2 ) = (5 + 3 ) + 2 C) 5 + 3 + 2 = 20 - 6 - 4 D) 5 + 3 + 2 = 2 + 3 + 5

Flammable metals require the placement of a Class ___ fire extinguisher nearby

A. A B. B C. C D. D