Which of the following function(s) can be defined continuously at \...
Which of the following function(s) can be defined continuously at \( x=0 \) ?
(A) \( f(\mathrm{x})=\frac{1-\sec ^{2} 2 \mathrm{x}}{4 \mathrm{x}^{2}} \)
(B) \( g(x)=\frac{\csc x-1}{x \csc x}( \) where \( \csc x=\operatorname{cosec} x) \)
\( \mathrm{P} \)
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(C) \( h(x)=\frac{\sin 5 x}{x} \)
(D) \( l(x)=\left(1+2 x^{2}\right)^{\frac{1}{x^{2}}} \)
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