fn main() {
    let mut t = String::new();
    std::io::stdin().read_line(&mut t).ok();
    let t: usize = t.trim().parse().unwrap();
    for _ in 0..t {
        let mut nm = String::new();
        std::io::stdin().read_line(&mut nm).ok();
        let nm: Vec<usize> = nm.trim().split_whitespace().map(|s| s.parse().unwrap()).collect();
        let n = nm[0];
        let m = nm[1];
        let mut a = String::new();
        std::io::stdin().read_line(&mut a).ok();
        let a: Vec<usize> = a.trim().split_whitespace().map(|s| s.parse().unwrap()).collect();
        let mut flg = true;
        for i in 0..n-1 {
            let cur = m - a[i];
            let nxt = m - a[i+1];
            if cur + nxt > m {
                flg = false;
                break;
            }
        }
        if flg {
            println!("Yes");
        } else {
            println!("No");
        }
    }
}