Please read the following table in Markdown format and then answer the question according to the table. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| Race | Circuit | Date | Pole position | Fastest lap | Winning driver | Constructor | Tyre | Report |
| --- | --- | --- | --- | --- | --- | --- | --- | --- |
| Monaco Grand Prix | Monaco | 10 May | Jim Clark | Graham Hill | Graham Hill | BRM | D | Report |
| Dutch Grand Prix | Zandvoort | 24 May | Dan Gurney | Jim Clark | Jim Clark | Lotus - Climax | D | Report |
| Belgian Grand Prix | Spa-Francorchamps | 14 June | Dan Gurney | Dan Gurney | Jim Clark | Lotus - Climax | D | Report |
| French Grand Prix | Rouen-Les-Essarts | 28 June | Jim Clark | Jack Brabham | Dan Gurney | Brabham - Climax | D | Report |
| British Grand Prix | Brands Hatch | 11 July | Jim Clark | Jim Clark | Jim Clark | Lotus - Climax | D | Report |
| German Grand Prix | Nürburgring | 2 August | John Surtees | John Surtees | John Surtees | Ferrari | D | Report |
| Austrian Grand Prix | Zeltweg | 23 August | Graham Hill | Dan Gurney | Lorenzo Bandini | Ferrari | D | Report |
| Italian Grand Prix | Monza | 6 September | John Surtees | John Surtees | John Surtees | Ferrari | D | Report |
| United States Grand Prix | Watkins Glen | 4 October | Jim Clark | Jim Clark | Graham Hill | BRM | D | Report |
| Mexican Grand Prix | Hermanos Rodriguez | 25 October | Jim Clark | Jim Clark | Dan Gurney | Brabham - Climax | D | Report |
Question:
What is the Tyre for the united states grand prix?
Answer:
D