The number of real values of \[a\] satisfying the equation \[{{a}^{2}}-2a\sin x+1=0\] is

The number of real values of \[a\] satisfying the equation \[{{a}^{2}}

1.	The number of real values of \[a\] satisfying the equation \[{{a}^{2}}-2a\sin x+1=0\] is
A.	Zero
B.	One
C.	Two
D.	Infinite
Answer» D. Infinite