Delltrix Corp. a cusotmer support provider, needs operators who are bilingual in English and Spanish. A few applicants of Spanish origin are rejected because of their poor English language proficiency. The applicants file a disparate impact case with the Equal Employment Opportunty Commission against Delltrix on the grounds of discrimination based on nationality. Which of the following defenses in Delltrix most likely to use in this case? a) The defense of undue hardship b) the contributory negligence defense. c) the comparitive negligence defense d) the assumption of risk defense e) the business necssity defense.