Find equations of both lines that are tangent to the curve ( y = x³/2 - 3x²/3x²+1 ) and are parallel to the line ( 3x - 2y = 15 ).
a. No real solutions
b. ( y = 3x - 2 ) and ( y = -x + 5 )
c. ( y = 3x + 2 ) and ( y = -x - 5 )
d. ( y = 3x + 5 ) and ( y = -x - 2 )