vec$(e{)}_u$ and vec$(e{)}_v$ are two random unit vectors. The vector sum of them is equal to vec$(A).$ What can you say about the magnitude of vec$(A)?$

$($a$)A=1,$

$($b$)0A1,$

$($c$)0A2,$

$($d$)A=2,$

$($e$)$ None of above.