Which of the following chemical reactions depicts the oxidizing behaviour of `H_(2)SO_(4)` ?
A. `2HI+H_(2)SO_(4)toI_(2)+SO_(2)+2H_(2)O`
B. `Ca(OH)_(2)+H_(2)SO_(4)to CaSO_(4)+2H_(2)O`
C. `NaCI+H_(2)SO_(4)to NaHSO_(4)+HCI`
D. `2PCI_(5)+H_(2)SO_(4)to 2POCI_(3)+2HCI+SO_(2)CI_(2)`
