प्रत्येक वाक्य के नीचे दिए गए वाक्यांशों में से कौन सा वाक्यांश बोल्ड टाइप में छपे वाक्यांश को प्रतिस्थापित करना चाहिए ताकि वाक्य व्याकरण की दृष्टि से सही हो सके?
Though we $have\, kept\, in\, mind\, to\, try\, and\, maintain$ most facilities,we would like to request you to kindly bear with us any inconvenience that may be caused.

• A
  must keep in mind to try and maintain
• B
  have kept in mind trying and maintain
• C
  would keep in mind to try and to maintain
• D
  No correction required