What type of argument is being made below? Is it a valid argument?
1. Statement: Molly Rose works for Bianca or Adam.
2. Statement: Molly Rose does not work for Bianca.
3. Conclusion: Molly Rose works for Adam.

Select the correct answer below:
a. Law of Detachment; the argument is valid.
b. Law of Syllogism; the argument is valid.
c. Law of Contraposition; the argument is valid.
d. Law of Disjunctive Syllogism; the argument is valid.