舒张早期奔马律是指()
A. S<sub>3</sub>S<sub>2</sub>间距与S<sub>1</sub>S<sub>2</sub>间距相仿
B. S<sub>3</sub>S<sub>2</sub>间距>S<sub>1</sub>S<sub>2</sub>间距
C. S<sub>4</sub>S<sub>1</sub>间距S<sub>1</sub>S<sub>2</sub>间距
D. S<sub>3</sub>S<sub>4</sub>间距=S<sub>1</sub>S<sub>2</sub>间距
E. S<sub>3</sub>S<sub>4</sub>间距>S<sub>1</sub>S<sub>2</sub>间距