Which of the following is the major cause of global warming?

• A. Re-radiation of U.V. rays by \[C{{O}_{2}}\] and \[{{H}_{2}}O\]
• B. Re-radiation of I.R. rays by \[C{{O}_{2}}\] and \[{{H}_{2}}O\]
• C. Re-radiation of I.R. rays by \[{{O}_{2}}\] and \[{{N}_{2}}\]
• D. Re-radiation of U.V. rays by \[{{O}_{2}}\] and \[{{N}_{2}}\]