Multiple Choice $1$ point

A $5$ kg object located at $r=3i+4j+2km$ is moving with a velocity of $v=-i+3j-2k.$ What is the angle between $r$ and $v?$

$76\mathrm{.}0$

$63\mathrm{.}4$

$26\mathrm{.}6$

$14\mathrm{.}0$