Which of the following scenarios exemplifies a sustainable strategy under the triple-bottom-line approach?单项选择题

Chemicor’s nearest competitor increased the salaries of its production workers by 30 percent, but Chemicor kept its wages the same to gain a cost advantage over its competitor.

Chemicor developed an additive that doubled the life of its plastics. The chemical was legal, but environmental groups argued that it harmed the environment.

Rather than complying with restrictive recycling laws in the United States, Chemicor outsourced its manufacturing to a country with fewer environmental restrictions.

Chemicor reformulated its products to eliminate chemicals that were widely used in the industry but were being investigated for their potential negative effects on the environment.