Drinking Water from a Well Is Discovered to Have an Arsenic

Multiple Choice

Drinking water from a well is discovered to have an arsenic concentration of 3.4  10^-4 g of arsenic per liter. Does this value exceed the permissible level of arsenic in drinking water of 10 ppb?

A) No, 3.4  10^-4 g is lower than the permissible value of 1.0  10^-5 g/L.
B) Yes, 3.4  10^-4 g is higher than the permissible value of 1.0  10^-5 g/L.
C) No, 3.4  10^-4 g is lower than the permissible value of 1.0  10^-3 g/L.
D) Yes, 3.4  10^-4 g is higher than the permissible value of 1.0  10^-3 g/L.
E) It is not possible to determine the answer from the information given.