Match the following
| List I | List II | ||
|---|---|---|---|
| I. | Helical virus | A. | Bacteriophage |
| II. | Glycoprotein | B. | Rabies virus |
| III. | Complex viruses | C. | Influenza virus |
| IV. | Enveloped virus | D. | Measles virus |
For the reaction \( A + B \to C \), the rate law is found to be \( \text{rate} = k[A]^2[B] \). If the concentration of \( A \) is doubled and \( B \) is halved, by what factor does the rate change?