Activity based costing attempts to: a. turn direct costs into indirect costs by tracking the cost drivers behind direct costs. b. turn indirect costs into direct costs by tracking the cost drivers behind indirect costs. c. correct the distortions built into product costing by the way that direct costs are allocated. d. correct the distortions built into product costing by the way that the learning curve is applied to direct labor costs. e. introduce a new way to allocate direct costs that more accurately captures labor and material usage.

Stocks a, b, and c are similar in some respects: each has an expected return of 10% and a standard deviation of 25%. stocks a and b have returns that are independent of one another; i.e., their correlation coefficient, r, equals zero. stocks a and c have returns that are negatively correlated with one another; i.e., r is less than 0. portfolio ab is a portfolio with half of its money invested in stock a and half in stock b. portfolio ac is a portfolio with half of its money invested in stock a and half invested in stock c. which of the following statements is correct? a. portfolio ab has a standard deviation that is greater than 25%.b. portfolio ac has an expected return that is less than 10%.c. portfolio ac has a standard deviation that is less than 25%.d. portfolio ab has a standard deviation that is equal to 25%.e. portfolio ac has an expected return that is greater than 25%.