An investment analyst has assembled data on the profits made by matatu operators $($Y in ksh million$)$ on all routes in the city of Nairobi vis$-$a$-$vie the number of trips $($X$)$ over $10$ working days and obtained the following information;

X

$5$

$6$

$8$

$9$

$11$

$12$

$7$

$10$

$11$

$9$

$$XY

$5,812$

$$Y

$648$

$137\mathrm{.}24$

$389\mathrm{.}6$

Required:

Calculate the coefficient of determination $($R$2)$

A$.$

R$2=0\mathrm{.}65$

B$.$

R$2=0\mathrm{.}76$

C$.$

R$2=0\mathrm{.}35$

D$.$

R$2=0\mathrm{.}60$