Please help in a, b and c

A horizontal wire loop is in a magnetic field pointing upwards as shown . The magnetic field is constant with OB time . loop " ) Is there any current flowing through the loop ? what happens to the loop when the radius of the loop starts increasing ? Quantify your answer when the rate of increase is constant. " ) what happens to the loop when the radius of the loop starts deere- asing ? Quantify your answer when the rate of decrease is constant