6. Ross's APT is known as which one of the following? a. single factor model b. multi-factor model C. zero-beta model d. index factor model 7. Time-Weighted Rate of Return is synonymous with which of the following? a. Internal Rate of Return b. Money-Weighted Rate of Return C. Sub-Period Rate of Return d. Geometric Rate of Return 8. Within its structure, the Jensen Index uses which of the following after the random error variable has been accounted for? a. CAPM b. APT C. CML d. TWRR