This is a question with answer options. Goal: To soft boil an egg,

Which of the following methods is more reasonable for accomplishing this goal?

OPT: a. place the egg in boiling water until the white part of the egg is cooked, and the yolk of the egg is completely cooked and solid as well.. b. place the egg in boiling water until the white part of the egg is cooked, and the yolk of the egg is slightly cooked but still a little bit soft and runny.....I think the answer is
b.