For H3PO4 and H3PO3 the correct choice i...

For `H_3PO_4` and `H_3PO_3` the correct choice is:

(A)` H_3PO_3` is `dibasic` `acid`

(B)` H_3PO_3` is `tribasic` `acid`

(C)` H_3PO_4` is `dibasic` `acid`

(D)` H_3PO_4` is `tribasic` `acid`

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