Given the Equations Below,which Description Best Fits the Physical Situation

Multiple Choice

Given the equations below,which description best fits the physical situation? $$- 99.6 \mathrm {~m} = \left( - 40.0 \frac { \mathrm { m } } { \mathrm { s } } \right) ( 2.00 \mathrm {~s} ) - \frac { 1 } { 2 } \left( 9.80 \frac { \mathrm { m } } { \mathrm { s } ^ { 2 } } \right) ( 2.00 \mathrm {~s} ) ^ { 2 }$$

A) A projectile's displacement two seconds after being fired downward with a speed of 30.0 m/s.
B) A projectile's displacement two seconds after being fired downward with a speed of 40.0 m/s.
C) A projectile's displacement two seconds after being fired downward with a speed of 50.0 m/s.
D) A projectile's displacement two seconds after being fired downward with a speed of 60.0 m/s.
E) A projectile's displacement two seconds after being fired downward with a speed of 80.0 m/s.