Identify the final product `(B)` in the following sequence of reactions.
`CH_(3)-overset(CH_(3))(C )=CH_(2)overset(Conc.H_(2)SO_(4))underset(0^(@)C)(rarr)Aoverset(C_(2)H_(5)OH)(rarr)B`
A. `CH_(3))_(2)CHCH_(2)OC_(2)H_(5)`
B. `(CH_(3))_(3)COC_(2)H_(5)`
C. `(CH_(3))_(3)C-OSO_(3)H`
D. `C_(2)H_(5)OC_(2)H_(5)`