<qa>  How many days will the Phase 2B part be randomized?The Phase 2B part is an open-label, randomized, parallel group study. In this part, approximately 160 patients will be randomized in a 1:1 ratio to receive either ASLAN001 400 mg BID or lapatinib 1250 mg QD, both in combination with capecitabine 1000 mgm2 BID for Days 1-14 of a 21-day cycle. 