(a) Whenever the designated agent is validly served with legal process, the agent shall respond within 30 calendar days after receipt, or within such longer period as may be prescribed by applicable State or local law. The agent shall also respond within this time period to interrogatories which accompany legal process. Notwithstanding State law, an agent need only respond once to legal process.

(b) If State or local law authorizes the issuance of interrogatories prior to or after the issuance of legal process, the agent shall respond to the interrogatories within 30 calendar days after being validly served, or within such longer period as may be prescribed by applicable State or local law.