\triangle R S V \cong \triangle T V S, and they share a side S V. S V is perpendicular to S R and \angle R V S = 78 degrees. Find x.
Choices:
A:11
B:11.5
C:12
D:12.5
Please directly answer the question and provide the correct option letter, e.g., A, B, C, D.
Question: \triangle R S V \cong \triangle T V S, and they share a side S V. S V is perpendicular to S R and \angle R V S = 78 degrees. Find x.
Choices:
A:11
B:11.5
C:12
D:12.5
Please first conduct reasoning, and then answer the question and provide the correct option letter, e.g., A, B, C, D, at the end.
Question: \triangle R S V \cong \triangle T V S, and they share a side S V. S V is perpendicular to S R and \angle R V S = 78 degrees. Find x.
Choices:
A:11
B:11.5
C:12
D:12.5