Calvin: Fire insurance policies are disadvantageous to policyholders. The typical policyholder always pays more in premiums than he or she collects in payments on policies.
Lorraine: Yes, but policyholders are still right in thinking that it is to their advantage to hold an insurance policy. The peace of mind that comes from having an insurance policy is the main advantage to the policyholder.
Lorraine addresses Calvin’s argument by

A．questioning the source of Calvin’s factual information.

B．introducing a consideration neglected by Calvin’s argument.

C．showing that Calvin’s argument assumes what it sets out to prove.

D．challenging the truth of the evidence advanced in Calvin’s argument.

E．(E) showing the irrelevance of Calvin’s evidence to the conclusion he draws.

标有“6V、3W”的灯L₁和标有“6V、1W”的灯L₂串联后接在12伏的电源上，求灯L₁的实际功率．