Identify the parts $a, b, c,$ and $d$ in the given diagram of the human mammary gland.

  • A
    $a-$ Ribs,$b-$ Mammary duct,$c-$ Mammary lobe,$d-$ Nipple
  • B
    $a-$ Intercostal muscle,$b-$ Mammary lobe,$c-$ Nipple,$d-$ Ampulla
  • C
    $a-$ Pectoralis major muscle,$b-$ Ampulla,$c-$ Mammary lobe,$d-$ Lactiferous duct
  • D
    $a-$ Ribs,$b-$ Ampulla,$c-$ Lactiferous duct,$d-$ Mammary lobe

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