Two parallel lines are crossed by a transversal. Parallel lines ( u ) and ( w ) are cut by transversal ( t ). At the intersection of lines ( u ) and ( t ), the bottom left angle is 105 degrees. At the intersection of lines ( w ) and ( t ), the upper right angle is ( g ) degrees. What is the value of ( g )?
a. ( g ) is equal to 75
b. ( g ) is equal to 80
c. ( g ) is equal to 100
d. ( g ) is equal to 105