ODE — Abel's formula gives $W(1)=e$, not an option

Let $\phi$ and $\psi$ be solutions of $y"-2xy'+(\sin x^2)y=0$ (the booklet prints the first term as $y'$) with $\phi(0)=1$, $\phi'(0)=1$, $\psi(0)=1$, $\psi'(0)=2$. Then $W(\phi,\psi)$ at $x=1$ is: