The starting material is $2,3-\text{dimethylbut-2-ene}$. It undergoes ozonolysis followed by reduction with $Zn/H_2O$ to form product $A$. Product $A$ then reacts with $CH_3MgBr$ followed by hydrolysis to form product $B$. Identify product $B$.

• A
  $(CH_3)_2C=O$
• B
  $(CH_3)_2CHOH$
• C
  $(CH_3)_3COH$
• D
  $CH_3CH_2CH_2OH$