Choose one and answer correctly

C. 1.5×10^2 μg

I hope this is good enough:

A.) 1.5 * (10^2) kilograms = 150 kilograms

B.)1.5 * (10^7) grams =  15 000 000 grams

C.) 1.5 * (10^12) micrograms = 1 500 000 000 000 micrograms

Convert 1500000000000 Micrograms into Milligrams

1500000000

D.)2.3 * (10^9) milligrams =

2 300 000 000 milligrams