Select the best choice that identifies the true statement(s). When an organization is undergoing an assessment of its quality and service using the SERVQUAL model, which collection of attributes below would be employed? Group of answer choices a. Altruism, Training, Dependability, Cost, and Punctuality are five key dimensions of the model. b. Reliability, Assurance, Tangibles, Empathy, and Responsiveness are five key dimensions of the model. c. The model can help in measuring the gap between customers' service expectations (before the service is provided) and the customers' perceptions of the service (after the service is provided). d. Dependability, Preparedness, Physical Attributes, Understanding, and market Position are five key dimensions of the model. e. Both choices b and c are true. f. Both choices a and d are true