MDM has asked all the important questions already, esp the one about what you would like :-) So, I will present a small opinion.
From a risk reduction perspective, I would take A. Health benefits are very important depending on who you need to support.
+ If you are a young and health person, then you can buy a high deductible plan to cover for health emergencies that can cost more.
+ If you have a pre-existing condition, then A is an easy decision.
+ If you need to support a family OR plan on an addition to the family, A would be a good choice.
+ If the cost of the employee health plan is more expensive that what you can get outside, then I would skip A.
+ .....
From a savings perspective, money I do not see is the easiest way to save...a 401K, even one with no match, means $18000 per year pre-tax in savings.
So, from that perspective also, A would be a better choice.
Third point would be when would you need the money...If FIRE is 30 years away && you do not need the money, I would just go with the 401K and let it compound. If you are 2 years from FIRE and you are much younger than 59, then the question is: will you need this money to sustain you? If not, I would use 401K, etc.....
More details would help.