26.下列何者可抑制鈣離子進入mast cell而抑制細胞釋放發炎物質？
(A)guaifenesin
(B)bromhexine
(C)theobromine
(D)cromolyn

https://en.wikipedia.org/wiki/Cromoglicic_acid 

It is known to somewhat inhibit chloride channels (37% ± 7%)^[9] and thus may inhibit the:

• exaggerated neuronal reflexes triggered by stimulation of irritant receptors on sensory nerve endings (e.g. exercise-induced asthma)
• release of preformed cytokines from several type of inflammatory cells (T cells, eosinophils) in allergen-induced asthma

Note: Another chemical (NPPB: 5-nitro-2(3-phenyl) propylamino-benzoic acid) was shown, in the same study, to be a more effective chloride channel blocker.

Finally it may act by inhibiting calcium influx.