A sector of circle of radius 7.2cm which subtends an angle of 300° at the centre is used to form a cone. What is the radius of the base of the cone?

• A.(2, 3) and (3, 5)
• B.(2, 5) and (5, 2)
• C.(5, 2) and (5, 3)
• D.(5, 3) and (3, 5)