What is the product formed when one molecule of $HBr$ reacts with one molecule of $1,3$-butadiene at $40^{\circ}C$?

• A
  $1$-bromo-$2$-butene under thermodynamic control
• B
  $3$-bromo-$1$-butene under kinetic control
• C
  $1$-bromo-$2$-butene under kinetic control
• D
  $3$-bromo-$1$-butene under thermodynamic control