The Recommended Dose Allowance (RDA) for the trace metal lead through diet is 0.000114 g/day, based on allowable lead intake for adults. Express this dose in microgram per day.

• A. 6840 micrograms/day
• B. 1.14 micrograms/day
• C. 1.9 micrograms/day
• D. 114 micrograms/day

Answer: (D)