Christine is typing at a rate of \( 75 \) words per minute. Paula is typing at twice Christine's speed. If together they need to transcribe a \( 2000 \) word paper which of the following expressions would illustrate the time in minutes, \( x \) , it would take for them to do so.
A) \( 150 = \frac { 2000 x } { 75 } \)
B) \( \frac { 75 } { x } + \frac { 150 } { x } = 2000 \)
C) \( 150 + 75 = \frac { x } { 2000 } \)
D) \( x = \frac { 2000 } { ( 150 + 75 ) }\)