If a C-14 has a half life of 5730 years, then how long will it take for quantity of C-14 in a sample to drop to 1/8 of initial quantity?

• A. 2.58 × 104 years
• B. 1.44 × 104 years
• C. 1.72 × 104 years
• D. 2.58 × 104 years