Suppose you have fitted a complex regression model on a dataset. Now, you are using Ridge regression with tuning parameter lambda to reduce its complexity. Choose the option(s) below which describes relationship of bias andvariance with lambda.

• A. in case of very large lambda; bias is low, variance islow
• B. in case of very large lambda; bias is low, variance ishigh
• C. in case of very large lambda; bias is high, variance islow
• D. in case of very large lambda; bias is high, variance ishigh