Two circles with equal radii are enclosed by a rectangle, as shown. The distance between their centers is \displaystyle\frac{2x}{3}. The value of x is

**Answer Choices**

A. \frac{15}{4}

B. 5

C. 6

D. \frac{60}{7}

E. \frac{15}{2}

Two circles with equal radii are enclosed by a rectangle, as shown. The distance between their centers is \displaystyle\frac{2x}{3}. The value of x is

**Answer Choices**

A. \frac{15}{4}

B. 5

C. 6

D. \frac{60}{7}

E. \frac{15}{2}