Answer:
c
Step-by-step explanation:
as the roots are imaginary so it does not intersect x-axis.
C
Answer: Carat
Step-by-step explanation:
It is given that 1 atomic unit is equivalent to
and 
Express carat and milligram in the atomic mass unit, that is

For milligram

clearly, carat is greater than milligram
-28n - 4 + 2n - 8 = 66
-26n - 12 = 66
-26n = 78
n = -3