A particle moves along a circular path having a radius of 2.0 m. At an instant when the speed of the particle is equal to 3.0 m/s and changing at the rate of 5.0 m/s2/2, what is the magnitude of the total acceleration of the particle?

a.7.5 m/s2/2

b.5.4 m/s2/2

c.6.7 m/s2/2

d.4.5 m/s2/2

e.6.0 m/s2