Solve the Formula for the Specified Variable $P = s _ { 1 } + s _ { 2 } + s _ { 3 } ;$

Multiple Choice

Solve the formula for the specified variable.
- $P = s _ { 1 } + s _ { 2 } + s _ { 3 } ;$ for $s _ { 3 }$

A) $s _ { 3 } = s _ { 1 } + s _ { 2 } - P$
B) $s _ { 3 } = P - s _ { 1 } - s _ { 2 }$
C) $s _ { 3 } = P + s _ { 1 } + s _ { 2 }$
D) $s _ { 3 } = s _ { 1 } + P - s _ { 2 }$