A) Technology Corporation's (TC) annual stock returns for the last five years are: 21%, 42%, 15%, 24%, and 39%. What is TC's coefficient of variation (CV) for this time period? Enter your answer rounded to two decimal places. For example, if your answer is 12.345 then enter as 12.35 in the answer box.

B) Preston, Inc.'s stock has a 20% chance of producing a 48% return, a 50% chance of producing an 8% return, and a 30% chance of producing a -15% return. What is the firm's standard deviation of return? Note: Enter your answer rounded off to two decimal points. Do not enter % in the answer box. For example, if your answer is 0.12345 or 12.345%, then enter as 12.35 in the answer box