JEE Main 2021 Chemistry question

The number of S = O bonds present in sulphurous acid, peroxodisulphuric acid and pyrosulphuric acid, respectively are :

• (A)2, 3 and 4
• (B)1, 4 and 3
• (C)2, 4 and 3
• (D)1, 4 and 4Correct