Patient Care Question?

I have been really trying to figure this question out, and I wanted to see what all of you think. This question is part of my homework for my Patient Care class. Here it goes:

After completing a radiologic technology program, you are employed at the local community hospital int he diagnostic imaging department. You are approached by a colleague who asks you to become a member of the local chapter of your professional organization. You know that you will be expected to pay yearly dues. Which would be your best answer?

A. You explain that you have just begun your first job and money is in short supply at this time.

B. You join in 1-2 years when your financial status improves.

C. You join at once because you feel that it is an obligation to be a member of your professional organization.

Thank you for your help. I think the answer is C, but I am not sure.