A progressive wave \( \mathrm{y}=\mathrm{A} \sin (\mathrm{kx}-\omega \mathrm{t}) \) is reflected...

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A progressive wave \( \mathrm{y}=\mathrm{A} \sin (\mathrm{kx}-\omega \mathrm{t}) \) is reflected by a rigid wall at \( \mathrm{x}=0 \). Then the reflected wave can be represented by
(a) \( \mathrm{y}=\mathrm{A} \sin (\mathrm{kx}+\omega \mathrm{t}) \)
(b) \( \mathrm{y}=\mathrm{A} \cos (\mathrm{kx}+\omega \mathrm{t}) \)
(c) \( y=-A \sin (k x-\omega t) \)
(d) \( y=-A \sin (k x+\omega t) \)
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