The Site from Which an Airplane Takes Off Is the Origin

Multiple Choice

The site from which an airplane takes off is the origin. The x axis points east; the y axis points straight up. The position and velocity vectors of the plane at a later time are given by ​ .
​
The magnitude, in meters, of the plane's displacement from the origin is

A) 9.14 × 103.
B) 1.61 × 104.
C) 1.84 × 104.
D) 9.14 × 103t.
E) 1.61 × 104t.