Question Content AreaPaula owns four separate activities. She elects not to group them together as a single activity under the "appropriate economic unit" standard. Paula participates for $130$ hours in Activity A$,115$ hours in Activity B$,260$ hours in Activity C$,$ and $100$ hours in Activity D$.$ She has one employee, who works $125$ hours in Activity D$.$ Which of the following statements is correct?

a$.$ Paula is not a material participant with respect to Activities A$,$ B$,$ C$,$ and D$.$

b$.$ Paula is a material participant with respect to Activities A$,$ B$,$ C$,$ and D$.$

c$.$ Activities A$,$ B$,$ C$,$ and D are all significant participation activities.

d$.$ None of these choices are correct.