A progressive wave travelling in positive by $x-$ direction given by $y = a\, sin (kx -\omega t)$ meets fixed end at $x = 0$. The reflected wave may be given by
A$y = -a\, sin (kx - \omega t)$
B$y = a\, sin (kx + \omega t)$
C$y = a\, sin (\omega t - kx)$
D$y = -a\, sin (kx + \omega t)$
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B$y = a\, sin (kx + \omega t)$
b
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