$\text { The isotope } { } ^ { 239 } \mathrm { Pu } \text { has a half-life of } 24,100 \text { years. After } 10,000 \text { years, a sample of }$

Multiple Choice

$\text { The isotope } { } ^ { 239 } \mathrm { Pu } \text { has a half-life of } 24,100 \text { years. After } 10,000 \text { years, a sample of }$ the isotope is reduced 1.6 grams. What was the initial size of the sample (in grams) ? How large was the sample after the first 1,000 years? Round your answers to four decimal places.

A) 2.1332 , 2.0727
B) 2.7731 , 2.6945
C) 1.2799 , 1.2436
D) 1.7065 , 1.6582
E) 1.0666 , 1.0364