A pulley is hinged at the centre and a massless thread is wrapped around it. The thread is pulled with a contant froce `F` starting from rest. As the time increases -
.
A. its angular velocity increases, but force on hinge remains constant
B. its angular velocity remains same, but force on hinge increases
C. its angular velocity increases and force on hinge increases
D. its angular velocity remains same and force on hinge is also constant
