T = int(input())

def calc(N,M,A):
    stop = M
    over = 0
    for a in A:
        if a > M:
            return 'No'
        
        if over <= a:
            pass
        else:
            return 'No'
        stop = a
        over = M - a
    return 'Yes'

for _ in range(T):
    N,M = map(int,input().split())
    A = list(map(int,input().split()))
    print(calc(N,M,A))