Answer:
They´re the same.
Explanation:
Someone deleted my answer. And my brainly is gone..
Have a good night ma´am/sir.
Be safe!
Answer: The penetrating power of alpha rays, beta rays, and gamma rays varies greatly. Alpha particles can be blocked by a few pieces of paper. Beta particles pass through paper and Gamma rays are the most difficult to stop and require concrete, lead, or other heavy shielding to block them.
I think it is B as 168/20
<span>Black holes must have a mass THREE or more times the mass of the Sun.</span>