GKFix MCQ Question

What is the general equation for a standing wave on a string with fixed ends?

• A. y(x, t) = a sin(kx − ωt)
• B. y(x, t) = a cos(kx + ωt)
• C. y(x, t) = [2a sin kx] cos ωt
• D. y(x, t) = 2a sin(kx) cos(ωt)