FA to Regular expressions Concept

Question

For this given 3 state machine, what will be the regular expressions for the following cases:

1. When A is the final state. 
2. When B is the final state
3. When C is the final state 

Comments

Please state the answer by right resolution.

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If A is final state,

($r1^{*}$r2 $r4^{*}r5 $$r7^{*}$)($\epsilon$ + $(r6 r4^{*} r5 r7^{*} )^{*}$ + $(r6 r3 r1^{*} r2 r4^{*}r5 r7^{*})^{*}$)