Match the media component used in mammalian cell culture (Column I) with its respective role (Column II).
$$\begin{array} {lll} \textbf{Column I} & & \textbf{Column II} \\ \text{P. Hydrocortisone} & & \text{1. Mitogen} \\ \text{Q. Fibronectin} & & \text{2. Vitamin} \\ \text{R. Epidermal growth factor} & & \text{3. Hormone} \\ \text{S. Riboflavin} & & \text{4. Cell attachment} \end{array}$$
- $\text{P-3, Q-4, R-1, S-2}$
- $\text{P-3, Q-4, R-2, S-1}$
- $\text{P-4, Q-3, R-1, S-2}$
- $\text{P-4, Q-3, R-2, S-1}$