Which of the following statement sare TRUE?(A) A equation $ax^2+bx+c=0$ has real and distinct roots if $b^2-4ac>=0$ and $a\ne0$ .(B) The unit digit in $49^{18}$ is 1.(C) If two lines make complementry angles with the axis of x then the product of their slopes is 1.(D) The line bx – ay = 0 meet the hyperbola $\frac{x^2}{a^2}-\frac{y^2}{b^2}=1$
Choose the correct answer from the options given below:
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