Select the false statement from below:
a. jurisdictions should assume that resources outside the incident area (state and federal resources) may take up to 72 hours to arrive.
b. failure to include voluntary organizations in your planning and exercises will result in duplication of effort and/or resource shortfalls and "spontaneous" volunteers arriving at the scene.
c. given the limited resources, emergency managers should encourage groups to provide unsolicited donations.
d. communities cannot effectively respond to or recover from incidents without strong cooperative relations with the private sector.