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Let ax^(2)+a^(2)x+2=0 be a quadratic equ...

Let `ax^(2)+a^(2)x+2=0` be a quadratic equation, `a in R` and S be the set of values of `a `for which roots of this equation are imaginary or equal, then answer the following questions:
Number of integral values of `a` in set `S` is (a) 1 (b) 2 (c) 3 (d) 4

A

1

B

2

C

3

D

4

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