Select cost information for Klondike Corporation is as follows: 1,000 units of output 2,000 units of output Total Cost/Unit Total Cost/Unit Direct materials $ 4,000 $ 4.00 $ 8,000 $ 4.00 Rent expense $ 2,000 $ 2.00 $ 2,000 $ 1.00 Based on this information: Multiple Choice Both direct materials and rent expense are variable costs. Direct materials is a fixed cost and rent expense is a variable cost. Both direct materials and rent expense are fixed costs. Direct materials is a variable cost and rent expense is a fixed cost. Both direct materials and rent expense are mixed costs.

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%.