While planning the project, you discover that an activity would be best performed by an expert resource. However, the resource manager will not commit to the best expert resource being on your team at the present time. The BEST thing to do would be to estimate the activity:O a$)$ As though you had an average resource doing the task.b$)$ Using expert judgment.c$)$ As if you had an inexperienced resource.d$)$ As if the expert resource was available.