Apply following sections for "BIDU" stock

a. Obtain daily price data for your stock for the period between January 4, 2021 and January 31, 2022.

b. Using this data and Black-Scholes-Merton model, calculate call and put prices for your stock for each trading day in January 2022, where option strike prices are the nearest natural number to the closing price for the year 2021 and option maturity date is January 31, 2022.