BWIP: $400$ units $(20\%$ complete with respect to conversion & $30\%$ complete

with respect to materials$)$ EWIP: $200$ units $(40\%$ complete with respect to

conversion & $50\%$ complete with respect to materials$)$ Started: $2000$ units. Whi

are equivalent units of production $($weighted average method$)?$

Materials: $2,100$ ; Conversion: $2,280$

Materials: $2,080$ ; Conversion: $1,980$

Materials: $1,980$ ; Conversion: $2,480$

Materials: $2,300$ ; Conversion: $2,280$