Among $$CaH_{2},BeH_{2},BaH_{2},$$ the order of ionic charecter is

A

$$BaH_{2}<BeH_{2}<CaH_{2}$$

B

$$BeH_{2}<BaH_{2}<CaH_{2}$$

C

$$caH_{2}<BeH_{2}<BaH_{2}$$

D

$$BeH_{2}<caH_{2}<BaH_{2}$$