IIT JEE 1982 Maths - 'Adapted' - FIB to Multi-Correct Q22

$y=f(x)$ is a function satisfying $x^2+y^2=4$ . Then the number of points at which $f(x)$ is discontinuous can be $\text{\_\_\_\_}$ .

• (A) 1
• (B) 2
• (C) 3
• (D) No such function is possible

Enter your answer as a 4 digit string of 1s and 9s - 1 for correct option, 9 for wrong. Eg. 1199 indicates A and B are correct, C and D are incorrect. None, one or all may also be correct.

In case you are preparing for IIT JEE, you may want to try IIT JEE 1982 Mathematics Archives