def solve(n, m, a):
    ans = 'Yes'
    for i in range(0, n - 1):
        if m - a[i] < 0 or (a[i] + a[i + 1]) - m < 0:
            ans = 'No'
    return ans       
for _ in range(int(input())):
    n, m = map(int,input().split())
    a = list(map(int,input().split()))

    print(solve(n, m, a))