Radiation Seed Therapy Is a Common Method for Treating Some $\times$

Radiation seed therapy is a common method for treating some prostate cancers and brain tumors. Palladium-103, which decays by electron capture and gamma ray emission with a half-life of 17.0 days, is one isotope used for this treatment. How much palladium-103 (102.91 g/mol) is needed to produce an initial radioactivity level of 1.30 mCi? Note: 1 Ci = 3.70 $\times$ 10¹⁰/s.

A) 0.0174 $\mu$ g
B) 0.0251 $\mu$ g
C) 0.0316 $\mu$ g
D) 0.0995 $\mu$ g
E) 0.0594 $\mu$ g