t=int(input())
for _ in range(t):
    n,m=map(int,input().split())
    a=list(map(int,input().split()))
    for i in range(n):a[i]=m-a[i]
    for i in range(n-1):
        if a[i]+a[i+1]>m:
            print("No")
            break
    else:print("Yes")