Xavier owned an old oil painting 'Rafflesia Flower' which he has inherited from his grandfather 50 years ago. He wanted to pawn his painting for quick cash as he was in financial difficulties. In order to pawn 'Rafflesia Flower'. Xavier asked his close friend Yazmin, the sole proprietor of Yazmin Art Appraisal Firm, a licensed appraiser and valuer of artistic personal property, to value 'Rafflesia Flower' at RM 5,000 instead of the real value of RM2,000. Yazmin gave a valuation report stating the value of the painting is RM5,000. In January this year, Xavier successfully obtained a loan of RM5,000 by pawning his painting at Zach Pawnbroker Sdn Bhd. The pawnbroker relied on Yazmin's valuation report given by Xavier together with the painting. They did not make any separate valuation as Yazmin Art Appraisal Firm is a reputable firm. After 6 months, Xavier failed to redeem" Rafflesia Flower" from Zach Pawnbroker by paying his loan and interests accrued. Zach Pawnbroker Sdn. Bhd. wanted to sell the painting by auction. They were informed by the auctioneer that the painting was worth only RM2,000. The painting was eventually auctioned off at RM2,500 only. The relevant provision of the Civil Law Act 1956 is: Advise Zach Pawnbroker Sdn. Bhd. whether they have a valid professional negligence claim in suing Yazmin Art Appraisal Firm for damages caused by the valuation when "Rafflesia Flower" was being pawned. What would Zach Pawnbroker need to prove in bringing a legal action? Also, discuss the potential defences available to Yazmin Art Appraisal Firm based on the relevant provision of the Civil Law Act 1956.