$\text { The half-life of the radium isotope Ra-226 is approximately } 1,599 \text { years. If the initial }$

Multiple Choice

$\text { The half-life of the radium isotope Ra-226 is approximately } 1,599 \text { years. If the initial }$ quantity of the isotope is $38 \mathrm {~g}$ , what is the amount left after 1,000 years? Round your answer to two decimal places.

A) $24.63 \mathrm {~g}$
B) $30.60 \mathrm {~g}$
C) $25.13 \mathrm {~g}$
D) $11.88 \mathrm {~g}$
E) $12.32 \mathrm {~g}$