Answer:
The answer is C: the matrix requires at least three years worth of data.
Step-by-step explanation:
The Boston Consultinf Group (BCG) Matrix does not require three years worth of data.
Steps in performing
Step 1. Choose the unit
Step 2. Define the market
Step 3. Calculate relative market share
Step 4. Find out market growth rate
Step 5. Draw the circles on a matrix