input: The following are multiple choice questions (with answers) about medical knowledge.   **Question:** Most accurate and safe method to diagnose ble pregnancy at 6weeks-   (A) Doppler assessment of fetal cardiac activity   (B) USG for fetal cardiac activity   (C) Urinary Beta-hCG determination   (D) Per vaginal examination of uterine size corresponding to 6 weeks gestation
output: ['(B) USG for fetal cardiac activity <> answer', 'The following are multiple choice questions (with answers) about medical knowledge. <> instruction', '(A) Doppler assessment of fetal cardiac activity  (B) USG for fetal cardiac activity  (C) Urinary Beta-hCG determination  (D) Per vaginal examination of uterine size corresponding to 6 weeks gestation <> possible answers', '  Most accurate and safe method to diagnose ble pregnancy at 6weeks- <> context']