Suppose the Half-Life of an Isotope Is 2 Days $2.5$ Grams
B) More Than

Suppose the half-life of an isotope is 2 days. You purchase 10 grams of the isotope, but it was produced in a laboratory 4 days before it was delivered to you. How much of this isotope will you have 3 days after it was delivered to you?

A) $2.5$ grams
B) more than $1.25$ grams but less than $2.5$ grams
C) $1.25$ grams
D) more than $2.5$ grams but less than 5 grams
E) Iess than $1.25$ grams