Use Euler's method with step size 0.25 to compute the approximate ( y )-values ( y₁ ), ( y₂ ), ( y₃ ), and ( y₄ ) of the solution of the initial-value problem ( y'=1-2x-2y ), ( y(0)=3 ).
a) ( y₁=3.75, y₂=4.375, y₃=5, y₄=5.625 )
b) ( y₁=3.5, y₂=4, y₃=4.5, y₄=5 )
c) ( y₁=3.75, y₂=4.375, y₃=5, y₄=5.625 )
d) ( y₁=3.5, y₂=4, y₃=4.5, y₄=5 )