The equation e^4x+8e^3x+13e^2x−8 e^x+1=0 x∈R has .IIT JEE MATHS- Quadratic Equations

The equation 〖 e〗^4x+〖 8e〗^3x+13〖 e〗^2x−8〖 e〗^x+1=0 x∈R has (A) two solutions and both are negative (B) no solutions (C ) four solutions and two of which are negative (D ) two solutions and only one of them is negative IIT JEE PYQ - QUADRATIC EQUATIONS | CONCEPTUAL BASED REPEATED QUESTIONS IN JEE MAINS